[FFmpeg-cvslog] commit: Make avfilter_unref_buffer() accept a NULL parameter. ( Stefano Sabatini )

[git at videolan.org]

ffmpeg | branch: master | Stefano Sabatini <stefano.sabatini-lala at poste.it> | Sat Jan 15 17:21:15 2011 +0000| [6baf4afa9969eea23cd4ec9b0cec3b7aed1f49af] | committer: Stefano Sabatini 

Make avfilter_unref_buffer() accept a NULL parameter.

Originally committed as revision 26373 to svn://svn.ffmpeg.org/ffmpeg/trunk

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6baf4afa9969eea23cd4ec9b0cec3b7aed1f49af
---

 libavfilter/avfilter.c |    2 ++
 libavfilter/avfilter.h |    4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index 6ecd4ce..4fbb6bf 100644
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -70,6 +70,8 @@ AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
 
 void avfilter_unref_buffer(AVFilterBufferRef *ref)
 {
+    if (!ref)
+        return;
     if (!(--ref->buf->refcount))
         ref->buf->free(ref->buf);
     av_free(ref->video);
diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index a3c51e0..5b08941 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -28,7 +28,7 @@
 
 #define LIBAVFILTER_VERSION_MAJOR  1
 #define LIBAVFILTER_VERSION_MINOR 73
-#define LIBAVFILTER_VERSION_MICRO  1
+#define LIBAVFILTER_VERSION_MICRO  2
 
 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
                                                LIBAVFILTER_VERSION_MINOR, \
@@ -177,7 +177,7 @@ AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask);
  * Remove a reference to a buffer. If this is the last reference to the
  * buffer, the buffer itself is also automatically freed.
  *
- * @param ref reference to the buffer
+ * @param ref reference to the buffer, may be NULL
  */
 void avfilter_unref_buffer(AVFilterBufferRef *ref);