fix: memory leak caused by animation

src/Views/Blame.axaml

@@ -84,10 +84,7 @@
       </StackPanel>
 
       <!-- Loading -->
-      <Path Width="48" Height="48" 
+      <v:LoadingIcon Width="48" Height="48" IsVisible="{Binding Data, Converter={x:Static ObjectConverters.IsNull}}"/>
-            Classes="rotating" 
-            Data="{StaticResource Icons.Loading}" 
-            IsVisible="{Binding Data, Converter={x:Static ObjectConverters.IsNull}}"/>
     </Grid>
 
     <!-- Custom window sizer for Linux -->

src/Views/FileHistories.axaml

@@ -106,10 +106,8 @@
                     BorderThickness="1,0,0,0"
                     BorderBrush="{DynamicResource Brush.Border2}"/>
 
-      <Path Grid.Column="2"
+      <v:LoadingIcon Grid.Column="2" 
-            Classes="rotating"
                      Width="48" Height="48" 
-            Data="{DynamicResource Icons.Loading}"
                      HorizontalAlignment="Center" VerticalAlignment="Center"
                      IsVisible="{Binding IsLoading}"/>
 

src/Views/Histories.axaml

@@ -135,11 +135,8 @@
                      IsHitTestVisible="False"
                      ClipToBounds="True"/>
 
-      <Path Classes="rotating"
+      <!-- Fix memory leak -->
-            Width="48" Height="48"
+      <v:LoadingIcon Width="48" Height="48" HorizontalAlignment="Center" VerticalAlignment="Center" IsVisible="{Binding IsLoading}"/>
-            Data="{DynamicResource Icons.Loading}"
-            HorizontalAlignment="Center" VerticalAlignment="Center"
-            IsVisible="{Binding IsLoading}"/>
     </Grid>
 
     <GridSplitter Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="3"

src/Views/LoadingIcon.axaml

@@ -0,0 +1,9 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             xmlns:m="using:SourceGit.Models"
+             x:Class="SourceGit.Views.LoadingIcon">
+  <Path x:Name="target" Data="{DynamicResource Icons.Loading}"/>
+</UserControl>

src/Views/LoadingIcon.axaml.cs

@@ -0,0 +1,27 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+
+namespace SourceGit.Views
+{
+    public partial class LoadingIcon : UserControl
+    {
+        public LoadingIcon()
+        {
+            IsHitTestVisible = false;
+            InitializeComponent();
+        }
+
+        protected override void OnLoaded(RoutedEventArgs e)
+        {
+            base.OnLoaded(e);
+            target.Classes.Add("rotating");
+        }
+
+        protected override void OnUnloaded(RoutedEventArgs e)
+        {
+            base.OnUnloaded(e);
+            target.Classes.Clear();
+        }
+    }
+}

src/Views/Statistics.axaml

@@ -180,10 +180,8 @@
     </ContentControl>
 
     <!-- Loading Mask -->
-    <Path Grid.Row="2" 
+    <v:LoadingIcon Grid.Row="2" 
-          Classes="rotating"
                    Width="48" Height="48" 
-          Data="{DynamicResource Icons.Loading}"
                    HorizontalAlignment="Center" VerticalAlignment="Center"
                    IsVisible="{Binding IsLoading}"/>
   </Grid>

src/Views/WorkingCopy.axaml

@@ -24,7 +24,7 @@
           <v:ChangeViewModeSwitcher Grid.Column="0" Width="12" Height="12" Margin="8,0,0,0" ViewMode="{Binding Source={x:Static vm:Preference.Instance}, Path=UnstagedChangeViewMode, Mode=TwoWay}"/>
           <TextBlock Grid.Column="1" Text="{DynamicResource Text.WorkingCopy.Unstaged}" Foreground="{DynamicResource Brush.FG2}" FontWeight="Bold" Margin="8,0,0,0"/>
           <TextBlock Grid.Column="2" FontWeight="Bold" Foreground="{DynamicResource Brush.FG2}" Text="{Binding Unstaged, Converter={x:Static c:ListConverters.ToCount}}"/>
-          <Path Grid.Column="3" Classes="rotating" Width="14" Height="14" Data="{StaticResource Icons.Loading}" Margin="8,0,0,0" IsVisible="{Binding IsStaging}"/>
+          <v:LoadingIcon Grid.Column="3" Width="14" Height="14" Margin="8,0,0,0" IsVisible="{Binding IsStaging}"/>
 
           <Button Grid.Column="5"
                   Classes="icon_button"
@@ -81,7 +81,7 @@
           <v:ChangeViewModeSwitcher Grid.Column="0" Width="12" Height="12" Margin="8,0,0,0" ViewMode="{Binding Source={x:Static vm:Preference.Instance}, Path=StagedChangeViewMode, Mode=TwoWay}"/>
           <TextBlock Grid.Column="1" Text="{DynamicResource Text.WorkingCopy.Staged}" Foreground="{DynamicResource Brush.FG2}" FontWeight="Bold" Margin="8,0,0,0"/>
           <TextBlock Grid.Column="2" FontWeight="Bold" Foreground="{DynamicResource Brush.FG2}" Text="{Binding Staged, Converter={x:Static c:ListConverters.ToCount}}"/>
-          <Path Grid.Column="3" Classes="rotating" Width="14" Height="14" Data="{StaticResource Icons.Loading}" Margin="8,0,0,0" IsVisible="{Binding IsUnstaging}"/>
+          <v:LoadingIcon Grid.Column="3" Width="14" Height="14" Margin="8,0,0,0" IsVisible="{Binding IsUnstaging}"/>
           <Button Grid.Column="5" Classes="icon_button" Width="26" Height="14" Padding="0" Command="{Binding UnstageSelected}">
             <ToolTip.Tip>
               <StackPanel Orientation="Horizontal" VerticalAlignment="Center">
@@ -191,11 +191,7 @@
                   IsChecked="{Binding UseAmend, Mode=TwoWay}"
                   Content="{DynamicResource Text.WorkingCopy.Amend}"/>
 
-        <Path Grid.Column="3"
+        <v:LoadingIcon Grid.Column="3" Width="18" Height="18" IsVisible="{Binding IsCommitting}"/>
-              Classes="rotating"
-              Width="18" Height="18"
-              Data="{StaticResource Icons.Loading}"
-              IsVisible="{Binding IsCommitting}"/>
 
         <Button Grid.Column="4"
                 Classes="flat primary"