From 151571bbe4823ba955f9b617e970ed075a49927c Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <icculus@icculus.org>
Date: Mon, 2 Jan 2006 07:09:52 +0000
Subject: [PATCH] Quartz target shouldn't crash if an event thread is used.

 (SDL_INIT_EVENTTHREAD still doesn't work, but the crash is gone...)
---
 src/video/quartz/SDL_QuartzEvents.m | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/video/quartz/SDL_QuartzEvents.m b/src/video/quartz/SDL_QuartzEvents.m
index cc9b628ea..88c6d52dd 100644
--- a/src/video/quartz/SDL_QuartzEvents.m
+++ b/src/video/quartz/SDL_QuartzEvents.m
@@ -709,6 +709,9 @@ void QZ_PumpEvents (_THIS)
     NSRect winRect;
     NSAutoreleasePool *pool;
 
+    if (!SDL_VideoSurface)
+        return;  /* don't do anything if there's no screen surface. */
+
     /* Update activity every five seconds to prevent screensaver. --ryan. */
     static Uint32 screensaverTicks = 0;
     Uint32 nowTicks = SDL_GetTicks();