Close open files before calling builtin_exec().  I've tested this
and it fixes bug #1121.
 -Erik
diff --git a/shell/lash.c b/shell/lash.c
index 077cb11..57d969e 100644
--- a/shell/lash.c
+++ b/shell/lash.c
@@ -300,6 +300,7 @@
 	if (child->argv[1] == NULL)
 		return EXIT_SUCCESS;   /* Really? */
 	child->argv++;
+	close_all();
 	pseudo_exec(child);
 	/* never returns */
 }