fix small problem introduced by merging 4.02

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@16219 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02

otherlibs/win32unix/gettimeofday.c

@@ -25,6 +25,6 @@ CAMLprim value unix_gettimeofday(value unit)
   FILETIME ft;
   double tm;
   GetSystemTimeAsFileTime(&ft);
-  tm = *(uint64 *)&ft - epoch_ft; /* shift to Epoch-relative time */
+  tm = *(uint64_t *)&ft - epoch_ft; /* shift to Epoch-relative time */
   return copy_double(tm * 1e-7);  /* tm is in 100ns */
 }