From 34dc1d61b4e1f89a33a91bd833f6225e2d56b824 Mon Sep 17 00:00:00 2001
From: Marc Hoersken <info@marc-hoersken.de>
Date: Mon, 15 Dec 2014 01:10:29 +0100
Subject: [PATCH] x11 example: check return value of socket function

---
 example/x11.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/example/x11.c b/example/x11.c
index 6480dc8..8e52091 100644
--- a/example/x11.c
+++ b/example/x11.c
@@ -289,6 +289,10 @@ main (int argc, char *argv[])
     }
 
     sock = socket (AF_INET, SOCK_STREAM, 0);
+    if (sock == -1) {
+        perror("socket");
+        return -1;
+    }
 
     sin.sin_family = AF_INET;
     sin.sin_port = htons (22);