Fix incorrect thread access

[ngs]

These method calls are causing IncorrectThreadException

libc++abi.dylib: terminating with uncaught exception of type
realm::IncorrectThreadException: Realm accessed from incorrect thread.

[polqf]

Hi, @ngs , could you explain in which case are you getting this error? Xcode version, RRC version, install method...?

We are using RRC in a huge App and this has never happened to us.

A chuck of code from where the error is generated would be highly appreciated

[ngs]

I saw this crash both simulator and actual iPhone device.

Here is the crash log: https://gist.github.com/ngs/84be87109cbe575e27c2

And here is my code: https://github.com/ngs/ci2go/blob/c7ef3b86ccefdb8e27df626916591e8107635f82/CI2Go/Networking/BuildNetworkingExtension.swift#L109

[polqf]

Hi @ngs,

We've seen that you are using a predicate that is accessing to relationships, and that's the cause of the crash, for now RRC does not support them.

It seems that this PR is going to fix that, so thanks a lot.
Could you clean the additions and deletions on empty lines please?

[ngs]

@poolqf

Thanks for checking the crash log. I've cleaned up the code.

[polqf]

Merging.. Thanks @ngs