removed warnings

Originally committed as revision 2059 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/mpeg.c

@@ -406,7 +406,6 @@ static int mpeg_mux_end(AVFormatContext *ctx)
 static int mpegps_probe(AVProbeData *p)
 {
     int code, c, i;
-    const uint8_t *d;
 
     code = 0xff;
     /* we search the first start code. If it is a packet start code,

libavformat/yuv4mpeg.c

@@ -26,7 +26,7 @@ static int yuv4_write_header(AVFormatContext *s)
 {
     AVStream *st;
     int width, height;
-    int raten, rated, aspectn, aspectd, fps, fps1, n, gcd;
+    int raten, rated, aspectn, aspectd, n;
     char buf[Y4M_LINE_MAX+1];
 
     if (s->nb_streams != 1)
@@ -40,6 +40,9 @@ static int yuv4_write_header(AVFormatContext *s)
     //this is identical to the code below for exact fps
     av_reduce(&raten, &rated, st->codec.frame_rate, st->codec.frame_rate_base, (1UL<<31)-1);
 #else
+    {
+        int gcd, fps, fps1;
+
         fps = st->codec.frame_rate;
         fps1 = (((float)fps / st->codec.frame_rate_base) * 1000);
         
@@ -86,6 +89,7 @@ static int yuv4_write_header(AVFormatContext *s)
             rated /= gcd;
             break;
         }
+    }
 #endif
     
     aspectn = 1;