Make avfilter_graph_free() free the graph.

Make avfilter_graph_free() free not only the internal structures, but
also the allocated graph, and set the graph pointer to NULL for
increased safety.

Simplify usage.

Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 4359288c565705d1734f63d277f8918ee5af5e54)

1 files changed, 1 insertions, 4 deletions

diff --git a/ffmpeg.c b/ffmpeg.c
index 60eca1a630..a5d7e26023 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -2708,10 +2708,7 @@ static int transcode(AVFormatContext **output_files,
         }
     }
 #if CONFIG_AVFILTER
-    if (graph) {
-        avfilter_graph_free(graph);
-        av_freep(&graph);
-    }
+    avfilter_graph_free(&graph);
 #endif
 
     /* finished ! */