From e4eebc2da9da886e1bdf87d29e9a4c5b55111036 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Mon, 21 Jan 2013 23:00:20 +0100
Subject: [PATCH] avf_showwaves: fix null pointer dereference

Found-by: durandal_1707
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
 libavfilter/avf_showwaves.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavfilter/avf_showwaves.c b/libavfilter/avf_showwaves.c
index 30a8e1e62f..3e5f39f3c9 100644
--- a/libavfilter/avf_showwaves.c
+++ b/libavfilter/avf_showwaves.c
@@ -220,6 +220,7 @@ static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *insamples)
         }
         if (showwaves->buf_idx == showwaves->w)
             push_frame(outlink);
+        outpicref = showwaves->outpicref;
     }
 
     avfilter_unref_buffer(insamples);