Qt: Fix some potential crashes with the gamepad mapping

CHANGES

@@ -27,6 +27,7 @@ Bugfixes:
  - Util: Fix excessive memory allocation when decoding a PNG
  - GBA: Fix Iridion II savetype
  - Libretro: Fix aspect ratio
+ - Qt: Fix some potential crashes with the gamepad mapping
 Misc:
  - Qt: Window size command line options are now supported
  - Qt: Increase usability of key mapper

src/platform/qt/GBAKeyEditor.cpp

@@ -280,7 +280,7 @@ void GBAKeyEditor::lookupAxes(const GBAInputMap* map) {
 
 void GBAKeyEditor::bindKey(const KeyEditor* keyEditor, GBAKey key) {
 #ifdef BUILD_SDL
-	if (m_type == SDL_BINDING_BUTTON) {
+	if (m_type == SDL_BINDING_BUTTON && keyEditor->axis() >= 0) {
 		m_controller->bindAxis(m_type, keyEditor->axis(), keyEditor->direction(), key);
 	}
 #endif

src/platform/qt/InputController.cpp

@@ -399,14 +399,19 @@ void InputController::bindAxis(uint32_t type, int axis, GamepadAxisEvent::Direct
 	if (old) {
 		description = *old;
 	}
+	int deadzone = 0;
+	if (m_deadzones.size() > axis) {
+		deadzone = m_deadzones[axis];
+	}
 	switch (direction) {
 	case GamepadAxisEvent::NEGATIVE:
 		description.lowDirection = key;
-		description.deadLow = m_deadzones[axis] - AXIS_THRESHOLD;
+
+		description.deadLow = deadzone - AXIS_THRESHOLD;
 		break;
 	case GamepadAxisEvent::POSITIVE:
 		description.highDirection = key;
-		description.deadHigh = m_deadzones[axis] + AXIS_THRESHOLD;
+		description.deadHigh = deadzone + AXIS_THRESHOLD;
 		break;
 	default:
 		return;