Use _Noreturn rather than NO_RETURN.
No need for separate decl merely because of _Noreturn.
-2012-06-24 Samuel Bronson <naesten@gmail.com> (tiny change)
+2012-06-24 Samuel Bronson <naesten@gmail.com>
* emacsclient.c (set_local_socket): Fix compiler warning (Bug#7838).