Resolve outbound proxy null checking. (fixes #20)

[soroshsabz]

ITNOA

this PR resolved #20

[soroshsabz]

@julonexus please review it

thanks

[soroshsabz]

@Viish Did you can review it?

thanks

[julonexus]

The fix was already inside other branchs. I merged the last one into master.

[soroshsabz]

Thanks from reply

I think merging step by step is better. (if you merge this PR, I remerge from this to another PR.)

thanks :)

[soroshsabz]

@julonexus I resolve all conflicts. :)

[soroshsabz]

@julonexus I think one line resolve is better than extra if condition. :)

[soroshsabz]

@julonexus Any update?

[julonexus]

Merged