Fix debug in HTTPSConnectionWithTimeout.connect

[cjwatson]

There was one more layer of parentheses than there should have been.

Fixes #161.

[temoto]

Thank you very much.

Just a side note: you don't have to create both issue and pull request. Either one is enough.

[cjwatson]

Sorry for the noise; in this case it was because I wanted to put a real-world reproduction recipe somewhere, but didn't feel it quite belonged in a PR. But noted for the future.

[codecov]

Codecov Report

Merging #162 into master will not change coverage by %.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master     #162   +/-   ##
=======================================
  Coverage   75.68%   75.68%           
=======================================
  Files           8        8           
  Lines        2616     2616           
=======================================
  Hits         1980     1980           
  Misses        636      636           

Impacted Files	Coverage Δ
python3/httplib2/__init__.py	83.85% <0.00%> (ø)

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