From caeb0c30272a42c34b7f80acea90fa14cf98ec20 Mon Sep 17 00:00:00 2001
From: Stefano Sabatini <stefano.sabatini-lala@poste.it>
Date: Wed, 12 Jan 2011 21:23:16 +0000
Subject: Make avfilter_graph_free() do nothing if graph is NULL.

Originally committed as revision 26323 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavfilter/avfiltergraph.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'libavfilter/avfiltergraph.c')

diff --git a/libavfilter/avfiltergraph.c b/libavfilter/avfiltergraph.c
index cad601be1e..a62fe2f79d 100644
--- a/libavfilter/avfiltergraph.c
+++ b/libavfilter/avfiltergraph.c
@@ -34,6 +34,8 @@ AVFilterGraph *avfilter_graph_alloc(void)
 
 void avfilter_graph_free(AVFilterGraph *graph)
 {
+    if (!graph)
+        return;
     for (; graph->filter_count > 0; graph->filter_count --)
         avfilter_free(graph->filters[graph->filter_count - 1]);
     av_freep(&graph->scale_sws_opts);
-- 
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