x11 example: check return value of socket function

2014-12-15 01:10:29 +01:00 · 2014-12-15 01:10:29 +01:00 · 34dc1d61b4
commit 34dc1d61b4
parent be95032e29
1 changed files with 4 additions and 0 deletions
--- 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);