MicroPresenter: returns 500 instead of 404 when parameter callback is…

… missing

src/Application/MicroPresenter.php

@@ -69,7 +69,7 @@ public function run(Application\Request $request)
 
 		$params = $request->getParameters();
 		if (!isset($params['callback'])) {
-			throw new Application\BadRequestException('Parameter callback is missing.');
+			throw new Nette\InvalidStateException('Parameter callback is missing.');
 		}
 		$callback = $params['callback'];
 		$reflection = Nette\Utils\Callback::toReflection(Nette\Utils\Callback::check($callback));