Core: Reroot timing list when (de)scheduling

CHANGES

@@ -128,6 +128,7 @@ Bugfixes:
  - Qt: Grab focus when game starts (fixes mgba.io/i/804)
  - Core: Remember to deinit proxy ring FIFO
  - GBA Savedata: Fix EEPROM writing codepath when savetype is not EEPROM
+ - Core: Reroot timing list when (de)scheduling
 Misc:
  - mGUI: Add SGB border configuration option
  - mGUI: Add support for different settings types

src/core/timing.c

@@ -28,6 +28,10 @@ void mTimingSchedule(struct mTiming* timing, struct mTimingEvent* event, int32_t
 	if (nextEvent < *timing->nextEvent) {
 		*timing->nextEvent = nextEvent;
 	}
+	if (timing->reroot) {
+		timing->root = timing->reroot;
+		timing->reroot = NULL;
+	}
 	struct mTimingEvent** previous = &timing->root;
 	struct mTimingEvent* next = timing->root;
 	unsigned priority = event->priority;
@@ -44,6 +48,10 @@ void mTimingSchedule(struct mTiming* timing, struct mTimingEvent* event, int32_t
 }
 
 void mTimingDeschedule(struct mTiming* timing, struct mTimingEvent* event) {
+	if (timing->reroot) {
+		timing->root = timing->reroot;
+		timing->reroot = NULL;
+	}
 	struct mTimingEvent** previous = &timing->root;
 	struct mTimingEvent* next = timing->root;
 	while (next) {