Core: Fix the runloop resuming after a game has crashed (fixes #2451)

CHANGES

@@ -35,6 +35,7 @@ Emulation fixes:
 Other fixes:
  - 3DS: Ensure writes update file modification time (fixes mgba.io/i/2444)
  - Core: Don't attempt to restore rewind diffs past start of rewind
+ - Core: Fix the runloop resuming after a game has crashed (fixes mgba.io/i/2451)
  - FFmpeg: Fix crash when encoding audio with some containers
  - FFmpeg: Fix GIF recording (fixes mgba.io/i/2393)
  - GB: Fix temporary saves

include/mgba/core/thread.h

@@ -54,14 +54,15 @@ enum mCoreThreadState {
 
 	mTHREAD_INTERRUPTED,
 	mTHREAD_PAUSED,
-	mTHREAD_MIN_WAITING = mTHREAD_INTERRUPTED,
 	mTHREAD_CRASHED,
-	mTHREAD_MAX_WAITING = mTHREAD_PAUSED,
 
 	mTHREAD_INTERRUPTING,
 	mTHREAD_EXITING,
 
-	mTHREAD_SHUTDOWN
+	mTHREAD_SHUTDOWN,
+
+	mTHREAD_MIN_WAITING = mTHREAD_INTERRUPTED,
+	mTHREAD_MAX_WAITING = mTHREAD_CRASHED
 };
 
 enum mCoreThreadRequest {

src/core/thread.c

@@ -468,7 +468,7 @@ bool mCoreThreadIsActive(struct mCoreThread* threadContext) {
 	if (!threadContext->impl) {
 		return false;
 	}
-	return threadContext->impl->state >= mTHREAD_RUNNING && threadContext->impl->state < mTHREAD_EXITING;
+	return threadContext->impl->state >= mTHREAD_RUNNING && threadContext->impl->state < mTHREAD_EXITING && threadContext->impl->state != mTHREAD_CRASHED;
 }
 
 void mCoreThreadInterrupt(struct mCoreThread* threadContext) {