Add missing #includes to pass 'make checkheaders'.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@19675 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/wmaprodata.h

@@ -28,6 +28,9 @@
 #ifndef AVCODEC_WMAPRODATA_H
 #define AVCODEC_WMAPRODATA_H
 
+#include <stddef.h>
+#include <stdint.h>
+
 /**
  * @brief frequencies to divide the frequency spectrum into scale factor bands
  */