Fix #9614: Refresh rate dropdown was still active when vsync was enabled

src/settings_gui.cpp

@@ -469,6 +469,8 @@ struct GameOptionsWindow : Window {
 
 				this->SetWidgetLoweredState(WID_GO_VIDEO_VSYNC_BUTTON, _video_vsync);
 				this->SetWidgetDirty(WID_GO_VIDEO_VSYNC_BUTTON);
+				this->SetWidgetDisabledState(WID_GO_REFRESH_RATE_DROPDOWN, _video_vsync);
+				this->SetWidgetDirty(WID_GO_REFRESH_RATE_DROPDOWN);
 				break;
 
 			case WID_GO_BASE_SFX_VOLUME:
@@ -608,6 +610,7 @@ struct GameOptionsWindow : Window {
 		if (!gui_scope) return;
 		this->SetWidgetLoweredState(WID_GO_FULLSCREEN_BUTTON, _fullscreen);
 		this->SetWidgetLoweredState(WID_GO_VIDEO_ACCEL_BUTTON, _video_hw_accel);
+		this->SetWidgetDisabledState(WID_GO_REFRESH_RATE_DROPDOWN, _video_vsync);
 
 #ifndef __APPLE__
 		this->SetWidgetLoweredState(WID_GO_VIDEO_VSYNC_BUTTON, _video_vsync);