Bug 1036682 - Prevent LayerTransactionChild from sending messages after it has been destroyed. r=jrmuizel

gfx/layers/ipc/LayerTransactionChild.cpp

@@ -129,6 +129,7 @@ LayerTransactionChild::SendFenceHandle(AsyncTransactionTracker* aTracker,
 void
 LayerTransactionChild::ActorDestroy(ActorDestroyReason why)
 {
+  mDestroyed = true;
   DestroyAsyncTransactionTrackersHolder();
 #ifdef MOZ_B2G
   // Due to poor lifetime management of gralloc (and possibly shmems) we will