Make avfilter_graph_free() do nothing if graph is NULL.

Originally committed as revision 26323 to svn://svn.ffmpeg.org/ffmpeg/trunk
2011-01-12 21:23:16 +00:00
parent b382d1e3e4
commit caeb0c3027
3 changed files with 4 additions and 2 deletions
--- 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);