[FFmpeg-cvslog] avfilter/vf_pullup: add comment to explain memset(0)

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Wed Mar 26 20:05:57 2014 +0100| [3017239d3a6f1c4049394be49ae207cd4475ad53] | committer: Michael Niedermayer

avfilter/vf_pullup: add comment to explain memset(0)

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3017239d3a6f1c4049394be49ae207cd4475ad53
---

 libavfilter/vf_pullup.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/vf_pullup.c b/libavfilter/vf_pullup.c
index 73ffa68..9b9064c 100644
--- a/libavfilter/vf_pullup.c
+++ b/libavfilter/vf_pullup.c
@@ -137,7 +137,7 @@ static void free_field_queue(PullupField *head)
         av_free(f->combs);
         av_free(f->vars);
         next = f->next;
-        memset(f, 0, sizeof(*f));
+        memset(f, 0, sizeof(*f)); // clear all pointers to avoid stale ones
         av_free(f);
         f = next;
     } while (f != head);