Weaken assertion on calloc.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@179 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/vg_malloc2.c b/vg_malloc2.c
index 8b6c621..98d62bc 100644
--- a/vg_malloc2.c
+++ b/vg_malloc2.c
@@ -1178,7 +1178,7 @@
    Int    i, size;
    UChar* p;
    size = nmemb * nbytes;
-   vg_assert(size > 0);
+   vg_assert(size >= 0);
    p = VG_(malloc) ( aid, size );
    for (i = 0; i < size; i++) p[i] = 0;
    return p;