Description: fix denial of service via malformed APE file
Origin: upstream, http://git.videolan.org/?p=ffmpeg.git;a=commit;h=18c5fe919f4b1818ebdf405812c5a2d16174688f
Bug-Debian: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=628448

diff -Nur ffmpeg-0.6/libavformat/ape.c ffmpeg-0.6.new/libavformat/ape.c
--- ffmpeg-0.6/libavformat/ape.c	2010-04-03 10:15:00.000000000 -0400
+++ ffmpeg-0.6.new/libavformat/ape.c	2011-09-16 09:32:19.786352149 -0400
@@ -242,6 +242,10 @@
             url_fskip(pb, ape->wavheaderlength);
     }
 
+    if(!ape->totalframes){
+        av_log(s, AV_LOG_ERROR, "No frames in the file!\n");
+        return AVERROR(EINVAL);
+    }
     if(ape->totalframes > UINT_MAX / sizeof(APEFrame)){
         av_log(s, AV_LOG_ERROR, "Too many frames: %d\n", ape->totalframes);
         return -1;