obtree_is_menu is used for debug-version.
--- orig/obtree.c 2010-01-04 23:31:11.000000000 +0100
+++ obtree.c 2010-01-09 21:21:14.578125000 +0100
@@ -2924,7 +2924,7 @@
}
#endif
-#if INCLUDE_UNUSED
+#if GENERATE_DIAGS
bool
obtree_is_menu(OBJECT *tree)
{