File aubio-resampler-NULL-deref-fix.patch of Package aubio.8279

From: Takashi Iwai <tiwai@suse.de>
Subject: Fix a NULl dereference in aubio_source_avcodec_readframe()
References: bsc#1072317 CVE-2017-17554 

Signed-off-by: Takashi Iwai <tiwai@suse.de>

---
 src/io/source_avcodec.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/src/io/source_avcodec.c
+++ b/src/io/source_avcodec.c
@@ -269,6 +269,9 @@ void aubio_source_avcodec_readframe(aubi
     goto beach;
   }
 
+  if (!avr)
+    goto beach;
+
   int in_linesize = 0;
   av_samples_get_buffer_size(&in_linesize, avCodecCtx->channels,
       avFrame->nb_samples, avCodecCtx->sample_fmt, 1);