Qt: Hide mouse immediately when loading

CHANGES

@@ -39,6 +39,7 @@ Misc:
  - Qt: Allow overrides to be saved before a game is loaded
  - VFS: Make VFile.truncate work growing files on PSV (fixes mgba.io/i/885)
  - GBA Cheats: Improve detection of raw cheats
+ - Qt: Hide mouse immediately when loading
 
 0.6.0: (2017-07-16)
 Features:

src/platform/qt/Window.cpp

@@ -761,6 +761,9 @@ void Window::gameStarted(mCoreThread* context, const QString& fname) {
 	m_hitUnimplementedBiosCall = false;
 	m_fpsTimer.start();
 	m_focusCheck.start();
+	if (m_display->underMouse()) {
+		m_screenWidget->setCursor(Qt::BlankCursor);
+	}
 
 	m_controller->threadInterrupt();
 	if (m_controller->isLoaded()) {