mp3on4: do not needlessly set data_size to 0

diff --git a/libavcodec/mpegaudiodec.c b/libavcodec/mpegaudiodec.c
index 2751df6..d5af782 100644 (file)
--- a/libavcodec/mpegaudiodec.c
+++ b/libavcodec/mpegaudiodec.c
@@ -2047,7 +2047,6 @@ static int decode_frame_mp3on4(AVCodecContext * avctx,
         return AVERROR(EINVAL);
     }
 
-    *data_size = 0;
     // Discard too short frames
     if (buf_size < HEADER_SIZE)
         return AVERROR_INVALIDDATA;