Fix an assert. Unbreak build on 32-bit platforms.


git-svn-id: svn://svn.valgrind.org/vex/trunk@3073 8f6e269a-dfd6-0310-a8e1-e2731360e62c
diff --git a/priv/main_util.c b/priv/main_util.c
index 611884d..5f2fa5c 100644
--- a/priv/main_util.c
+++ b/priv/main_util.c
@@ -229,7 +229,7 @@
    };
 
    /* Make sure the compiler does no surprise us */
-   vassert(offsetof(struct align,x) == REQ_ALIGN);
+   vassert(offsetof(struct align,x) <= REQ_ALIGN);
 
 #if 0
   /* Nasty debugging hack, do not use. */