Merge pull request phpbb#6851 from iMattPro/ticket/17542

[ticket/17542] Throw an exception at the exit_handler instead

Author: marc1706

tests/mock/event_dispatcher.php

@@ -25,10 +25,11 @@ public function __construct()
 	public function trigger_event($eventName, $data = array()): array
 	{
 		$data = (array) $data;
-		
+
+		// Throw an exception if we reach the core's exit_handler()
 		if ($eventName === 'core.exit_handler')
 		{
-			$data['exit_handler_override'] = true;
+			throw new \RuntimeException('Exit handler called');
 		}
 
 		return $data;