*: more portability fixes by Dan Fandrich

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/ash.c b/shell/ash.c
index db28af7..b7c6431 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -5042,7 +5042,7 @@
 	struct redirtab *next;
 	int nullredirs;
 	int pair_count;
-	struct two_fd_t two_fd[0];
+	struct two_fd_t two_fd[];
 };
 #define redirlist (G_var.redirlist)