File ksh93-nvtree-free.dif of Package ksh

--- src/cmd/ksh93/sh/nvtree.c.orig	2015-03-17 16:00:01.111718083 +0000
+++ src/cmd/ksh93/sh/nvtree.c	2015-03-17 16:00:31.560586300 +0000
@@ -1152,6 +1152,8 @@ static void put_tree(register Namval_t *
 	nv_putv(np, val, flags,fp);
 	if(val && nv_isattr(np,(NV_INTEGER|NV_BINARY)))
 		return;
+	if (!val && !np->nvfun)
+		return;
 	if(ap= nv_arrayptr(np))
 		nleft = array_elem(ap);
 	if(nleft==0)