branches/zip: buf_buddy_get_slot(): Fix a gcc 4.3.2 warning

about an empty body of a "for" statement.
This fixes part of Issue #176.

include/buf0buddy.ic

@@ -75,7 +75,8 @@ buf_buddy_get_slot(
 	ulint	i;
 	ulint	s;
 
-	for (i = 0, s = BUF_BUDDY_LOW; s < size; i++, s <<= 1);
+	for (i = 0, s = BUF_BUDDY_LOW; s < size; i++, s <<= 1) {
+	}
 
 	ut_ad(i <= BUF_BUDDY_SIZES);
 	return(i);