avformat/utils: av_probe_input_buffer2 decrease difference to libav

This removes the initialization of 2 unused fields
The change was part of c1868e7e
but wasnt merged as the fields could still be used
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/utils.c

@@ -342,7 +342,7 @@ int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat **fmt,
                           const char *filename, void *logctx,
                           unsigned int offset, unsigned int max_probe_size)
 {
-    AVProbeData pd = { filename ? filename : "", NULL, -offset };
+    AVProbeData pd = { filename ? filename : "" };
     uint8_t *buf = NULL;
     uint8_t *mime_type;
     int ret = 0, probe_size, buf_offset = 0;
@@ -371,7 +371,6 @@ int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat **fmt,
 
     for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
         probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
-
         score = probe_size < max_probe_size ? AVPROBE_SCORE_RETRY : 0;
 
         /* read probe data */