aac_adtstoasc_bsf: Return proper error code

Signed-off-by: Diego Biurrun <diego@biurrun.de>

libavcodec/aac_adtstoasc_bsf.c

@@ -57,7 +57,7 @@ static int aac_adtstoasc_filter(AVBitStreamFilterContext *bsfc,
 
     if (avpriv_aac_parse_header(&gb, &hdr) < 0) {
         av_log(avctx, AV_LOG_ERROR, "Error parsing ADTS frame header!\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
     if (!hdr.crc_absent && hdr.num_aac_frames > 1) {