faad needs CODEC_CAP_DELAY, otherwise you miss last frame

Originally committed as revision 20548 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/libfaad.c

@@ -329,5 +329,6 @@ AVCodec libfaad_decoder = {
     NULL,
     faac_decode_end,
     faac_decode_frame,
+    .capabilities = CODEC_CAP_DELAY,
     .long_name = NULL_IF_CONFIG_SMALL("libfaad AAC (Advanced Audio Codec)"),
 };