From c09893dd7cf1aa002a418c9023e42d889bb85220 Mon Sep 17 00:00:00 2001
From: Edgar Simo <bobbens@gmail.com>
Date: Sat, 11 Jul 2009 19:06:49 +0000
Subject: [PATCH] Fix double free when destroying event thread for a second
 time.

---
 src/events/SDL_events.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/events/SDL_events.c b/src/events/SDL_events.c
index 6944940ec..10a5f0775 100644
--- a/src/events/SDL_events.c
+++ b/src/events/SDL_events.c
@@ -196,7 +196,10 @@ SDL_StopEventThread(void)
         SDL_DestroyMutex(SDL_EventLock.lock);
     }
 #ifndef IPOD
-    SDL_DestroyMutex(SDL_EventQ.lock);
+    if (SDL_EventQ.lock) {
+        SDL_DestroyMutex(SDL_EventQ.lock);
+        SDL_EventQ.lock = NULL;
+    }
 #endif
 }