Show "Wrong password" info when the conversation password was wrong

Signed-off-by: Joas Schilling <coding@schilljs.com>

lib/Controller/PageController.php

@@ -179,7 +179,9 @@ class PageController extends Controller {
 						$this->talkSession->setPasswordForRoom($token, $token);
 					} else {
 						if ($passwordVerification['url'] === '') {
-							return new TemplateResponse($this->appName, 'authenticate', [], 'guest');
+							return new TemplateResponse($this->appName, 'authenticate', [
+								'wrongpw' => $password !== '',
+							], 'guest');
 						}
 
 						return new RedirectResponse($passwordVerification['url']);
@@ -232,7 +234,9 @@ class PageController extends Controller {
 				$this->talkSession->setPasswordForRoom($token, $token);
 			} else {
 				if ($passwordVerification['url'] === '') {
-					return new TemplateResponse($this->appName, 'authenticate', [], 'guest');
+					return new TemplateResponse($this->appName, 'authenticate', [
+						'wrongpw' => $password !== '',
+					], 'guest');
 				}
 
 				return new RedirectResponse($passwordVerification['url']);

templates/authenticate.php

@@ -6,7 +6,7 @@
 ?>
 <form method="post">
 	<fieldset class="warning">
-		<?php if (!isset($_['wrongpw'])){ ?>
+		<?php if (!$_['wrongpw']) { ?>
 			<div class="warning-info"><?php p($l->t('This conversation is password-protected')); ?></div>
 		<?php } else { ?>
 			<div class="warning"><?php p($l->t('The password is wrong. Try again.')); ?></div>