Fix warning for continue in PHP 7.3

Warning: "continue" targeting switch is equivalent to "break". Did you
mean to use "continue 2"? in ...\include\functions.php on line 1823

include/functions.php

@@ -59,12 +59,12 @@ function forum_session_start() {
 		$forum_session_id = random_key(32, FALSE, TRUE);
 		session_id($forum_session_id);
 	}
-	
+
 	if (!isset($_SESSION))
 	{
 		session_start();
 	}
-	
+
 	if (!isset($_SESSION['initiated']))
 	{
 		session_regenerate_id();
@@ -1820,7 +1820,7 @@ function get_tracked_topics()
 		{
 			case 'f': $type = 'forums'; break;
 			case 't': $type = 'topics'; break;
-			default: continue;
+			default: continue 2;
 		}
 
 		$id = intval(substr($id_data, 1));
@@ -2977,10 +2977,10 @@ function _csrf_confirm_form($key, $values)
 		}
 
 		($hook = get_hook('fn_redirect_pre_send_json')) ? eval($hook) : null;
-		
+
 		send_json($json_data);
-	}	
-	
+	}
+
 	// Setup breadcrumbs
 	$forum_page['crumbs'] = array(
 		array($forum_config['o_board_title'], forum_link($forum_url['index'])),
@@ -3049,7 +3049,7 @@ function message($message, $link = '', $heading = '')
 	global $forum_db, $forum_url, $lang_common, $forum_config, $base_url, $forum_start, $tpl_main, $forum_user, $forum_page, $forum_updates, $forum_loader, $forum_flash;
 
 	($hook = get_hook('fn_message_start')) ? eval($hook) : null;
-	
+
 	if (defined('FORUM_REQUEST_AJAX'))
 	{
 		$json_data = array(
@@ -3058,7 +3058,7 @@ function message($message, $link = '', $heading = '')
 		);
 
 		($hook = get_hook('fn_message_pre_send_json')) ? eval($hook) : null;
-		
+
 		send_json($json_data);
 	}
 
@@ -3228,12 +3228,12 @@ function redirect($destination_url, $message)
 			'message'	=> $message,
 			'destination_url' => $destination_url
 		);
-	
+
 		($hook = get_hook('fn_redirect_pre_send_json')) ? eval($hook) : null;
-		
+
 		send_json($json_data);
-	}	
-	
+	}
+
 	// If the delay is 0 seconds, we might as well skip the redirect all together
 	if ($forum_config['o_redirect_delay'] == '0') {
         if (!$forum_flash->get_message()) {