Fixed a C89 violation when atomic builtins are not defined, causing

a compile error with MSVC. The problem was introduced in Revision: 3150
revid:marko.makela@oracle.com-20100809085837-s1nfx6gjf7l6ttab

storage/innobase/ibuf/ibuf0ibuf.c

@@ -1363,12 +1363,12 @@ ibuf_add_ops(
 	const ulint*	ops)	/*!< in: operation counts */
 
 {
+	ulint	i;
+
 #ifndef HAVE_ATOMIC_BUILTINS
 	ut_ad(mutex_own(&ibuf_mutex));
 #endif /* !HAVE_ATOMIC_BUILTINS */
 
-	ulint	i;
-
 	for (i = 0; i < IBUF_OP_COUNT; i++) {
 #ifdef HAVE_ATOMIC_BUILTINS
 		os_atomic_increment_ulint(&arr[i], ops[i]);