10l: Unbreak libdirac compilation; CONFIG_LIBDIRAC is defined in config.h, so

include the header before using parts from it.

Originally committed as revision 13045 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/libdirac.h

@@ -26,6 +26,8 @@
 #ifndef FFMPEG_LIBDIRAC_H
 #define FFMPEG_LIBDIRAC_H
 
+#include "config.h"
+
 #ifdef CONFIG_LIBDIRAC
 
 #include "avcodec.h"