From 3a13e066ba184b1051167b0675bf9b4364af021e Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicholas.marriott@gmail.com>
Date: Thu, 1 Aug 2013 23:42:39 +0100
Subject: [PATCH] Allow the file descriptor received from the client to be -1 -
 it can be on Cygwin when stdin is not a terminal. Reported by A Young, SF bug
 52.

---
 server-client.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/server-client.c b/server-client.c
index 5923eb0e..fa4d2688 100644
--- a/server-client.c
+++ b/server-client.c
@@ -829,9 +829,6 @@ server_client_msg_dispatch(struct client *c)
 #ifdef __CYGWIN__
 			imsg.fd = open(identifydata.ttyname, O_RDWR|O_NOCTTY);
 #endif
-			if (imsg.fd == -1)
-				fatalx("MSG_IDENTIFY missing fd");
-
 			server_client_msg_identify(c, &identifydata, imsg.fd);
 			break;
 		case MSG_STDIN:
@@ -975,6 +972,8 @@ server_client_msg_identify(
 		return;
 	}
 
+	if (fd == -1)
+		return;
 	if (!isatty(fd)) {
 		close(fd);
 		return;