dix: make MasksPerDetailMask define private

It's only ever used inside dix/grabs.c, no outside users,
no no need to keep it public.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>

dix/grabs.c

@@ -67,6 +67,10 @@ SOFTWARE.
 #include "exglobals.h"
 #include "inpututils.h"
 
+#define MasksPerDetailMask 8    /* 256 keycodes and 256 possible
+                                   modifier combinations, but only
+                                   3 buttons. */
+
 #define BITMASK(i) (((Mask)1) << ((i) & 31))
 #define MASKIDX(i) ((i) >> 5)
 #define MASKWORD(buf, i) buf[MASKIDX(i)]

include/inputstr.h

@@ -157,10 +157,6 @@ typedef struct _OtherInputMasks {
  * keyboard/pointer device) going at once in the server.
  */
 
-#define MasksPerDetailMask 8    /* 256 keycodes and 256 possible
-                                   modifier combinations, but only
-                                   3 buttons. */
-
 typedef struct _DetailRec {     /* Grab details may be bit masks */
     unsigned int exact;
     Mask *pMask;