Fix PF_LOCAL socket example sockaddr_un size calculation.

ChangeLog

@@ -1,3 +1,8 @@
+2013-02-08  Roland McGrath  <roland@hack.frob.com>
+
+	* manual/examples/mkfsock.c (make_named_socket): Don't add one for
+	the '\0' terminator.
+
 2013-02-08  Joseph Myers  <joseph@codesourcery.com>
 
 	[BZ #13550]

manual/examples/mkfsock.c

@@ -45,13 +45,12 @@ make_named_socket (const char *filename)
 
   /* The size of the address is
      the offset of the start of the filename,
-     plus its length,
-     plus one for the terminating null byte.
+     plus its length (not including the terminating null byte).
      Alternatively you can just do:
      size = SUN_LEN (&name);
   */
   size = (offsetof (struct sockaddr_un, sun_path)
-	  + strlen (name.sun_path) + 1);
+	  + strlen (name.sun_path));
 
   if (bind (sock, (struct sockaddr *) &name, size) < 0)
     {