[HttpFoundation] fixed error when an IP in the X-Forwarded-For HTTP header contains a port
bug #13114 [HttpFoundation] fixed error when an IP in the X-Forwarded-For HTTP head... (fabpot)

This PR was merged into the 2.3 branch.

Discussion
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[HttpFoundation] fixed error when an IP in the X-Forwarded-For HTTP head...

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

On symfony.com, we have errors related to IP addresses in the `X-Forwarded-For` HTTP header that have a port. If that happens (I have no ideas what is doing that), the page crashes with an error like `inet_pton(): Unrecognized address 187.65.229.211:63479` (which comes from IpUtils::checkIpv6()). This fixes the root cause by removing the port.

#12572 is solving the consequence and I propose to also merge it.

Commits
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60ad382 [HttpFoundation] fixed error when an IP in the X-Forwarded-For HTTP header contains a port