Don’t cancel authentication requests

This ensures SSL/TLS errors bubble up as expected.
Restore space-based indentation
Restore previous method organization

Sorry @keithduncan, I just wanna make sure people can spot the
difference between old and new.
Remove SecTrustEvaluate assertion

We probably don’t want to bring down the program over a function call
failure.
Restore break that appears to have gotten removed
Don't continue without creds after using a cred!

/cc @keithduncan for confirmation that this is legit
Merge pull request #2 from github/dont-cancel-authentication-requests

Don’t cancel authentication requests