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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<div class='path'>path: <a href='/guix/log/?id=fa8fe90edb4efaf7d52f71516c4dcabb13d56418'>root</a>/<a href='/guix/log/tests?id=fa8fe90edb4efaf7d52f71516c4dcabb13d56418'>tests</a>/<a href='/guix/log/tests/git.scm?id=fa8fe90edb4efaf7d52f71516c4dcabb13d56418'>git.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/git.scm?id=fa8fe90edb4efaf7d52f71516c4dcabb13d56418&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-06-09 00:34:52 +0200'>2020-06-09</span></td><td><a href='/guix/commit/tests/git.scm?id=72357e2170e88f73c11ff089f87a744cee8606ec'>git: 'commit-difference' really excludes the ancestors of #:excluded.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/git.scm (commit-difference): Initialize VISITED to the closure of
OLD and EXCLUDED, as written in the docstring.
* tests/git.scm ("commit-difference, excluded commits"): Adjust
accordingly.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-05-25 00:00:28 +0200'>2020-05-25</span></td><td><a href='/guix/commit/tests/git.scm?id=c098c11be8eb9e0c12be42640721e3cb21c37628'>git: Add 'commit-relation'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/git.scm (commit-relation): New procedure.
* tests/git.scm ("commit-relation"): New test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-12-27 13:52:49 +0100'>2019-12-27</span></td><td><a href='/guix/commit/tests/git.scm?id=785af04a7574867dc940c791daa938a2432d0450'>git: 'commit-difference' takes a list of excluded commits.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/git.scm (commit-closure): Add 'visited' optional parameter.
(commit-difference): Add 'excluded' optional parameter; pass second
argument to 'commit-closure'.
* tests/git.scm ("commit-difference, excluded commits"): New test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-09-23 10:38:43 +0200'>2019-09-23</span></td><td><a href='/guix/commit/tests/git.scm?id=873f6f1334ab06a69e768a8aea0054404237542f'>git: Add 'commit-difference'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/git.scm (commit-closure, commit-difference): New procedures.
* guix/tests/git.scm, tests/git.scm: New files.
* Makefile.am (dist_noinst_DATA): Add guix/tests/git.scm.
(SCM_TESTS): Add tests/git.scm.
</span></span></td><td>Ludovic Courtès</td></tr>