From d034847f7ab4cd2d54377b8d8eafca07980c9d4d Mon Sep 17 00:00:00 2001
From: Stefano Sabatini <stefasab@gmail.com>
Date: Sun, 4 Nov 2012 00:17:27 +0100
Subject: [PATCH] lavfi/earwax: add missing NULL check in filter_samples()

---
 libavfilter/af_earwax.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavfilter/af_earwax.c b/libavfilter/af_earwax.c
index 95602a1acc..2e2cac39e4 100644
--- a/libavfilter/af_earwax.c
+++ b/libavfilter/af_earwax.c
@@ -129,6 +129,8 @@ static int filter_samples(AVFilterLink *inlink, AVFilterBufferRef *insamples)
                                   insamples->audio->nb_samples);
     int ret;
 
+    if (!outsamples)
+        return AVERROR(ENOMEM);
     avfilter_copy_buffer_ref_props(outsamples, insamples);
 
     taps  = ((EarwaxContext *)inlink->dst->priv)->taps;