64-bit cleanness: convert client requests to receive and return UWords.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2921 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/massif/ms_main.c b/massif/ms_main.c
index 9ce8d0e..e475c0f 100644
--- a/massif/ms_main.c
+++ b/massif/ms_main.c
@@ -1128,13 +1128,13 @@
 /*--- Client Requests                                      ---*/
 /*------------------------------------------------------------*/
 
-Bool SK_(handle_client_request) ( ThreadId tid, UInt* argv, UInt* ret )
+Bool SK_(handle_client_request) ( ThreadId tid, UWord* argv, UWord* ret )
 {
    switch (argv[0]) {
    case VG_USERREQ__MALLOCLIKE_BLOCK: {
       void* res;
       void* p         = (void*)argv[1];
-      UInt  sizeB     =        argv[2];
+      SizeT sizeB     =        argv[2];
       *ret            = 0;
       res = new_block( p, sizeB, /*align -- ignored*/0, /*is_zeroed*/False );
       sk_assert(res == p);