VC1: fix missing include h263.h

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@21932 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/vc1dec.c

@@ -29,6 +29,7 @@
 #include "dsputil.h"
 #include "avcodec.h"
 #include "mpegvideo.h"
+#include "h263.h"
 #include "vc1.h"
 #include "vc1data.h"
 #include "vc1acdata.h"