res/res_http_websocket: Fix minor nits found by wdoekes on r409681

When Moises committed the fixes for WSS (which was a great patch), wdoekes had
a few style nits that were on the review that got missed. This patch resolves
what I *think* were all of the ones that were still on the review.

Thanks to both moy for the patch, and wdoekes for the reviews.

Review: https://reviewboard.asterisk.org/r/3248/
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Merged revisions 426209 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 426210 from http://svn.asterisk.org/svn/asterisk/branches/12
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Merged revisions 426211 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@426212 65c4cc65-6c06-0410-ace0-fbb531ad65f3