Do not reset chosen session and maintain the session-choser dialog after a
failed login attempt.

Patch by E. Bavier

--- slim-1.3.6/panel.cpp.orig	1969-12-31 18:00:00.000000000 -0600
+++ slim-1.3.6/panel.cpp	2016-10-17 17:00:07.259649063 -0500
@@ -260,13 +260,12 @@
 }
 
 void Panel::ClearPanel() {
-	session_name = "";
-    session_exec = "";
 	Reset();
 	XClearWindow(Dpy, Root);
 	XClearWindow(Dpy, Win);
 	Cursor(SHOW);
 	ShowText();
+	ShowSession();
 	XFlush(Dpy);
 }
 
@@ -760,9 +760,7 @@
         pair<string,string> ses = cfg->nextSession();
         session_name = ses.first;
         session_exec = ses.second;
-        if (session_name.size() > 0) {
-                ShowSession();
-        }
+        ShowSession();
  }
 
 /* Display session type on the screen */
koszko</option>
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<tr><td><span title='2021-04-12 18:42:22 +0200'>2021-04-12</span></td><td><a href='/guix/commit/gnu/tests.scm?id=3332f4365bf329c361d650c70e53b8a74ad923bd'>tests: Support package extensions in the backdoor REPL.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/tests.scm
  (&lt;marionette-configuration&gt;): Add 'extensions' field.
  (marionette-shepherd-service): Honour the field.
  (with-import-modules-and-extensions): Define a combination
  of 'with-import-modules' and 'with-extensions'.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Maxime Devos</td></tr>
<tr><td><span title='2021-02-19 20:10:08 +0100'>2021-02-19</span></td><td><a href='/guix/commit/gnu/tests.scm?id=f57b7cea748c1e8284373811c13398d9f69aec89'>tests: Export %simple-os.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/tests.scm (%simple-os): Export it.
</span></span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2020-07-25 19:11:36 +0200'>2020-07-25</span></td><td><a href='/guix/commit/gnu/tests.scm?id=a5e2fc73760a2ae023f2e56bdbf8025971f90e64'>utils: Move &lt;location&gt; and '&amp;error-location' to (guix diagnostics).</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/utils.scm (&lt;location&gt;, source-properties-&gt;location)
(location-&gt;source-properties, &amp;error-location): Move to...
* guix/diagnostics.scm: ... here.
* gnu.scm: Adjust imports accordingly.
* gnu/machine.scm: Likewise.
* gnu/system.scm: Likewise.
* gnu/tests.scm: Likewise.
* guix/inferior.scm: Likewise.
* tests/channels.scm: Likewise.
* tests/packages.scm: Likewise.
</span></span></td><td>Ludovic Courtès</td></tr>