lavu: move internal define to the only places where it is used

libavcodec/h263.h

@@ -29,6 +29,7 @@
 #if !FF_API_ASPECT_EXTENDED
 #define FF_ASPECT_EXTENDED 15
 #endif
+#define INT_BIT (CHAR_BIT * sizeof(int))
 
 // The defines below define the number of bits that are read at once for
 // reading vlc values. Changing these may improve speed and data cache needs

libavcodec/h264_cabac.c

@@ -26,6 +26,7 @@
  */
 
 #define CABAC(h) 1
+#define INT_BIT (CHAR_BIT * sizeof(int))
 
 #include "libavutil/attributes.h"
 #include "libavutil/timer.h"

libavutil/internal.h

@@ -77,10 +77,6 @@
 #    define FF_ENABLE_DEPRECATION_WARNINGS
 #endif
 
-#ifndef INT_BIT
-#    define INT_BIT (CHAR_BIT * sizeof(int))
-#endif
-
 // Some broken preprocessors need a second expansion
 // to be forced to tokenize __VA_ARGS__
 #define E1(x) x