rtpengine: remove square brackets from IPv6 address for getaddrinfo

[Den4t]

rtpengine: IPv6 address in square brackets interpreted as FQDN.

• After loading from DB, rn_address is in form: [x:x:x:x:x:x:x:x]:nnnn, getaddrinfo function expect ipv6 in node argument without square brackets, otherwise, the argument is interpreted as FQDN.

Pre-Submission Checklist

• Commit message has the format required by CONTRIBUTING guide
• Commits are split per component (core, individual modules, libs, utils, ...)
• Each component has a single commit (if not, squash them into one commit)
• No commits to README files for modules (changes must be done to docbook files
  in doc/ subfolder, the README file is autogenerated)

Type Of Change

• Small bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds new functionality)
• Breaking change (fix or feature that would change existing functionality)

Checklist:

• PR should be backported to stable branches
• Tested changes locally
• Related to issue #XXXX (replace XXXX with an open issue number)

Description

[miconda]

@Den4t: have you checked that setting 0 in place of ] is not having other side effects? I didn't notice any restore.

@rfuchs: any opinion on this patch?

[Den4t]

@miconda

have you checked that setting 0 in place of ] is not having other side effects? I didn't notice any restore.

Yes, hp - is a pointer to pkg_malloc-ed hostname variable, this var is freed right after getaddrinfo and not used any more.
I tested this patch localy, work as expected.

[rfuchs]

@Den4t: have you checked that setting 0 in place of ] is not having other side effects? I didn't notice any restore.

@rfuchs: any opinion on this patch?

Looks good to me

[miconda]

Thanks, merging it!