Fix method name compare in ResolveControllerNameSubscriber

The left side to strtolower was not actually lowercased, so it would be always false.

Author: glensc

EventListener/ResolveControllerNameSubscriber.php

@@ -48,7 +48,7 @@ public function resolveControllerName(...$args)
 
     public function __call(string $method, array $args)
     {
-        if ('onKernelRequest' !== $method && 'onKernelRequest' !== strtolower($method)) {
+        if ('onKernelRequest' !== $method && 'onkernelrequest' !== strtolower($method)) {
             throw new \Error(sprintf('Error: Call to undefined method "%s::%s()".', static::class, $method));
         }