Fixed a memory leak in lash. It seems that close_all was calling close()

directly instead of calling mark_closed(), which allowed the memory allocated
by mark_open() to never be freed.
 -Erik

lash.c

@@ -632,7 +632,7 @@ static void close_all()
 {
 	struct close_me *c;
 	for (c=close_me_head; c; c=c->next) {
-		close(c->fd);
+		mark_closed(c->fd);
 	}
 	close_me_head = NULL;
 }

sh.c

@@ -632,7 +632,7 @@ static void close_all()
 {
 	struct close_me *c;
 	for (c=close_me_head; c; c=c->next) {
-		close(c->fd);
+		mark_closed(c->fd);
 	}
 	close_me_head = NULL;
 }

shell/lash.c

@@ -632,7 +632,7 @@ static void close_all()
 {
 	struct close_me *c;
 	for (c=close_me_head; c; c=c->next) {
-		close(c->fd);
+		mark_closed(c->fd);
 	}
 	close_me_head = NULL;
 }