64-bit cleanness -- use UWord instead of UInt.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3517 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/vg_scheduler.c b/coregrind/vg_scheduler.c
index 91ac173..0fe240c 100644
--- a/coregrind/vg_scheduler.c
+++ b/coregrind/vg_scheduler.c
@@ -628,7 +628,7 @@
 
    /* Initial thread's stack is the original process stack */
    VG_(threads)[tid_main].client_stack_highest_word 
-                                            = VG_(clstk_end) - sizeof(UInt);
+                                            = VG_(clstk_end) - sizeof(UWord);
    VG_(threads)[tid_main].client_stack_szB  = VG_(client_rlimit_stack).rlim_cur;
 
    VG_(atfork)(NULL, NULL, sched_fork_cleanup);