wbemprox: Avoid an invalid write when there are no forwards in the route table (Valgrind).

Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
diff --git a/dlls/wbemprox/builtin.c b/dlls/wbemprox/builtin.c
index 73d93a0..93bea52 100644
--- a/dlls/wbemprox/builtin.c
+++ b/dlls/wbemprox/builtin.c
@@ -2070,7 +2070,7 @@
         heap_free( forwards );
         return FILL_STATUS_FAILED;
     }
-    if (!resize_table( table, forwards->dwNumEntries, sizeof(*rec) ))
+    if (!resize_table( table, max(forwards->dwNumEntries, 1), sizeof(*rec) ))
     {
         heap_free( forwards );
         return FILL_STATUS_FAILED;