mGUI: Fix closing down a game if an exit is signalled

CHANGES

@@ -35,6 +35,7 @@ Other fixes:
  - Qt: Fix static compilation in MinGW (fixes mgba.io/i/1769)
  - Qt: Fix a race condition in the frame inspector
  - Qt: Add dummy English translation file (fixes mgba.io/i/1469)
+ - mGUI: Fix closing down a game if an exit is signalled
  - SM83: Simplify register pair access on big endian
  - VFS: Fix directory node listing on some filesystems
 Misc:

src/feature/gui/gui-runner.c

@@ -541,6 +541,9 @@ void mGUIRun(struct mGUIRunner* runner, const char* path) {
 				++frame;
 			}
 		}
+		if (!running) {
+			break;
+		}
 
 		if (runner->paused) {
 			runner->paused(runner);
@@ -651,7 +654,7 @@ void mGUIRunloop(struct mGUIRunner* runner) {
 			mInputMapLoad(&runner->params.keyMap, runner->keySources[i].id, mCoreConfigGetInput(&runner->config));
 		}
 	}
-	while (true) {
+	while (runner->running(runner)) {
 		char path[PATH_MAX];
 		const char* preselect = mCoreConfigGetValue(&runner->config, "lastGame");
 		if (preselect) {