avformat/aacdec: resync to the next adts frame on invalid data instead of aborting

Should fix ticket #6634
Signed-off-by: James Almer <jamrial@gmail.com>

libavformat/aacdec.c

@@ -190,8 +190,8 @@ retry:
         }
         if (!ff_id3v2_match(pkt->data, ID3v2_DEFAULT_MAGIC)) {
             av_packet_unref(pkt);
-            return AVERROR_INVALIDDATA;
-        }
+            ret = adts_aac_resync(s);
+        } else
             ret = handle_id3(s, pkt);
         if (ret < 0)
             return ret;