Fix PBDERDecoder

[jflinter]

I've been having issues with PBDERDecoder failing to properly parse the distinguishedNames of an NSURLProtectionSpace, and instead mistakenly returning nil. After searching around, I believe PBDERDecoder was copied from SNTDERDecoder in https://github.com/google/santa/. I'm not having any issues with that code, however. There are a few subtle differences in those files that I believe are causing the parser failures. This PR simply copies over the code from SNTDERDecoder.

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[jflinter]

As the source in this PR is not of my original authorship, I'd prefer not to sign the CLA. As the CLA suggests to make explicit, this code was submitted on behalf of a third-party: Google. Thanks!

[russellhancox]

Thank you for your PR. If you have time, could you delete the trailing whitespace on otherwise empty lines? I suspect Xcode added it. If you don't let us know and I'll fix it up after merging.

[jflinter]

Sure, done. Thanks @russellhancox!

[russellhancox]

LGTM

[jflinter]

\o/

On Fri, Aug 28, 2015 at 3:46 PM, Russell Hancox notifications@github.com wrote:

Merged #43 https://github.com/google/macops/pull/43.

— Reply to this email directly or view it on GitHub https://github.com/google/macops/pull/43#event-395415968.