File aubio-resampler-NULL-deref-fix.patch of Package aubio.8280

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 |    4 ++++
 1 file changed, 4 insertions(+)

--- a/src/io/source_avcodec.c
+++ b/src/io/source_avcodec.c
@@ -420,6 +420,8 @@ void aubio_source_avcodec_readframe(aubi
   }
 
 #ifdef HAVE_AVRESAMPLE
+  if (!avr)
+      goto beach;
   in_linesize = 0;
   av_samples_get_buffer_size(&in_linesize, avCodecCtx->channels,
       avFrame->nb_samples, avCodecCtx->sample_fmt, 1);
@@ -430,6 +432,8 @@ void aubio_source_avcodec_readframe(aubi
         (uint8_t **)&output, out_linesize, max_out_samples,
         (uint8_t **)avFrame->data, in_linesize, in_samples);
 #elif defined(HAVE_SWRESAMPLE)
+  if (!avr)
+      goto beach;
   in_samples = avFrame->nb_samples;
   max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE / avCodecCtx->channels;
   out_samples = swr_convert( avr,