Fix prototype.

Change-Id: Ib2f3e8efaa090a2346310dbcaebc74603b222ce8
diff --git a/room/huette3b.c b/room/huette3b.c
index 47c1eff..c73b1da 100644
--- a/room/huette3b.c
+++ b/room/huette3b.c
@@ -3,6 +3,8 @@
 #include __PATH__(1)"defs.h"
 
 
+int westen();
+
 protected void create() {
   ::create();