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>
<option value='koszko-scripts'>koszko-scripts</option>
</select> <input type='submit' value='switch'/></form></td></tr>
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<div class='path'>path: <a href='/guix/log/?id=02583de9febf53af397619ee85287dd5a96a40ea'>root</a>/<a href='/guix/log/tests?id=02583de9febf53af397619ee85287dd5a96a40ea'>tests</a>/<a href='/guix/log/tests/elpa.scm?id=02583de9febf53af397619ee85287dd5a96a40ea'>elpa.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/elpa.scm?id=02583de9febf53af397619ee85287dd5a96a40ea&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-01-16 23:14:05 +0100'>2020-01-16</span></td><td><a href='/guix/commit/tests/elpa.scm?id=9d6c6cb20ef240221fc9a8e155f4bfa53e71bce4'>import: elpa: Rewrite test to use an HTTP server instead of mocking.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-03-18 22:33:41 +0100'>2018-03-18</span></td><td><a href='/guix/commit/tests/elpa.scm?id=17cdd3d0fe1987d0272f2c3496123be1ef772d6b'>tests: elpa: Don't actually download files.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-03-18 22:25:54 +0100'>2018-03-18</span></td><td><a href='/guix/commit/tests/elpa.scm?id=e5425ed950d06f8e75697b7e8562f71704094453'>import: elpa: Adjust test for HTTPS URLs.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>