List index out of range fix when reading empty documents

inkbox.pro

@@ -4,7 +4,7 @@ greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 
 CONFIG += c++11
 
-QMAKE_CXXFLAGS += -Wno-unused-function
+QMAKE_CXXFLAGS += -Wno-unused-function -Wno-unused-parameter
 
 # You can make your code fail to compile if it uses deprecated APIs.
 # In order to do so, uncomment the following line.

main.cpp

@@ -26,7 +26,6 @@
 
 int main(int argc, char *argv[])
 {
-    checkconfig("test");
     // Checking if there has been an ALERT flag set up, and if there is, show a big warning
     if(checkconfig("/external_root/boot/flags/ALERT") == true) {
         QApplication a(argc, argv);

reader.cpp

@@ -399,7 +399,7 @@ reader::~reader()
 
 void reader::on_nextBtn_clicked()
 {
-    if(split_total - 1 == 1) {
+    if(split_total - 1 == 1 or split_total - 1 == 0) {
         QMessageBox::critical(this, tr("Invalid argument"), tr("You've reached the end of the document."));
     }
     else {

reader.h

@@ -140,6 +140,7 @@ public:
             ittext = content[i];
             QDir::setCurrent("/mnt/onboard/.adds/inkbox");
         }
+        return 0;
     }
     void checkwords() {
         QFile words_list(".config/06-words/config");