Index: undo.c
===================================================================
--- undo.c	(revision 8282)
+++ undo.c	(revision 8283)
@@ -1653,7 +1653,7 @@
 	return buff;
 }
 
-void undo_dump()
+void undo_dump(void)
 {
 	size_t n;
 	int last_serial = -2;