From 04675319996bc15824613ea2c96972be06dbecfa Mon Sep 17 00:00:00 2001
From: Panagiotis Issaris <takis.issaris@uhasselt.be>
Date: Wed, 17 Jan 2007 10:26:13 +0000
Subject: [PATCH] fix segfault with http://sam.zoy.org/zzuf/lol-ffplay.ogm and
 http://sam.zoy.org/zzuf/lol-ffplay.ogg

Originally committed as revision 7561 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/imgresample.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/imgresample.c b/libavcodec/imgresample.c
index ce1a05ce4b..adcfd04812 100644
--- a/libavcodec/imgresample.c
+++ b/libavcodec/imgresample.c
@@ -672,6 +672,8 @@ struct SwsContext *sws_getContext(int srcW, int srcH, int srcFormat,
 
 void sws_freeContext(struct SwsContext *ctx)
 {
+    if (!ctx)
+        return;
     if ((ctx->resampling_ctx->iwidth != ctx->resampling_ctx->owidth) ||
         (ctx->resampling_ctx->iheight != ctx->resampling_ctx->oheight)) {
         img_resample_close(ctx->resampling_ctx);