Index: serpentine.c
===================================================================
--- serpentine.c	(revision 29311)
+++ serpentine.c	(revision 29312)
@@ -417,6 +417,7 @@
 	tool_serpentine_draw_attached,
 	tool_serpentine_undo_act,
 	NULL,
+	NULL, /* escape */
 	
 	pcb_false
 };