mpegts: change variable-length array to fixed length

The difference between 188 and 204 is not worth worrying about.

Originally committed as revision 19697 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/mpegts.c

@@ -356,7 +356,7 @@ static void mpegts_close_filter(MpegTSContext *ts, MpegTSFilter *filter)
 }
 
 static int analyze(const uint8_t *buf, int size, int packet_size, int *index){
-    int stat[packet_size];
+    int stat[TS_MAX_PACKET_SIZE];
     int i;
     int x=0;
     int best_score=0;

libavformat/mpegts.h

@@ -27,6 +27,8 @@
 #define TS_FEC_PACKET_SIZE 204
 #define TS_DVHS_PACKET_SIZE 192
 #define TS_PACKET_SIZE 188
+#define TS_MAX_PACKET_SIZE 204
+
 #define NB_PID_MAX 8192
 #define MAX_SECTION_SIZE 4096