minor #10601 [HttpKernel] HttpCache typo (jakzal)

This PR was merged into the 2.3 branch.

Discussion
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[HttpKernel] HttpCache typo

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes - HttpKernel ones
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Commits
-------

8882dad Remove an unused argument.

src/Symfony/Component/HttpKernel/HttpCache/HttpCache.php

@@ -522,7 +522,7 @@ class HttpCache implements HttpKernelInterface, TerminableInterface
     protected function lock(Request $request, Response $entry)
     {
         // try to acquire a lock to call the backend
-        $lock = $this->store->lock($request, $entry);
+        $lock = $this->store->lock($request);
 
         // there is already another process calling the backend
         if (true !== $lock) {