Exit after the user's session has finished.  This works around slim's broken
PAM session handling (see
http://developer.berlios.de/bugs/?func=detailbug&bug_id=19102&group_id=2663).

Patch by Eelco Dolstra, from Nixpkgs.

--- slim-1.3.6/app.cpp	2013-10-15 11:02:55.629263422 +0200
+++ slim-1.3.6/app.cpp	2013-10-15 13:00:10.141210784 +0200
@@ -816,7 +822,7 @@
 	StopServer();
 	RemoveLock();
 	while (waitpid(-1, NULL, WNOHANG) > 0); /* Collects all dead childrens */
-	Run();
+	exit(OK_EXIT);
 }
 
 void App::KillAllClients(Bool top) {
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<tr><td><span title='2022-05-01 21:30:35 +0200'>2022-05-01</span></td><td><a href='/guix/commit/gnu/tests/messaging.scm?id=211fe3f66e6dfdaa64974931c458ab1d92afc182'>services: bitlbee: Use 'make-inetd-constructor'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/messaging.scm (bitlbee-shepherd-service): Add call to
'least-authority-wrapper'.  In 'start' method, use
'make-inetd-constructor' when available.
* gnu/tests/messaging.scm (run-bitlbee-test)["valid PID"]: Remove test.
</span></span></td><td>Ludovic Courtès</td></tr>