append_packet_chunked: Remove unused initialization.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/utils.c

@@ -283,7 +283,7 @@ static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
     int64_t chunk_size = size;
     int orig_pos       = pkt->pos; // av_grow_packet might reset pos
     int orig_size      = pkt->size;
-    int ret = 0;
+    int ret;
 
     do {
         int prev_size = pkt->size;