minor #33938 SCA: added missing break in a loop (kalessil)

This PR was merged into the 3.4 branch.

Discussion
----------

SCA: added missing break in a loop

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Tickets       | n/a
| License       | MIT
| Doc PR        | n/a

Commits
-------

6af04bbac6 SCA: added missing break in a loop

src/Symfony/Component/Cache/Traits/MemcachedTrait.php

@@ -249,6 +249,7 @@ trait MemcachedTrait
         foreach ($this->checkResultCode($this->getClient()->deleteMulti($encodedIds)) as $result) {
             if (\Memcached::RES_SUCCESS !== $result && \Memcached::RES_NOTFOUND !== $result) {
                 $ok = false;
+                break;
             }
         }