minor optimalization at bundle initialization

fast check to avoid six array method calls
[HttpKernel] made a small optimization to Bundle initialization
minor #9664 [HttpKernel] minor optimalization at bundle initialization (fabpot)

This PR was merged into the 2.2 branch.

Discussion
----------

[HttpKernel] minor optimalization at bundle initialization

fast check to avoid six array method calls

| Q             | A
| ------------- | ---
| Bug fix?      | [no]
| New feature?  | [no]
| BC breaks?    | [no]
| Deprecations? | [|no]
| Tests pass?   | [yes]
| Fixed tickets | #9657
| License       | MIT
| Doc PR        |

That's a rebased version of #9657 on 2.2 + another optimization suggested by @GromNaN

Commits
-------

3330c40 [HttpKernel] made a small optimization to Bundle initialization
4ba6c0b minor optimalization at bundle initialization