Fix warnings with gcc 4.7 and -Werror=parentheses #521
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This was referenced Oct 30, 2015
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Fixes issues with GCC where errors of the form
error: suggest parentheses around comparison in operand of ‘==’ [-Werror=parentheses]. Seems to only happen with GCC 4.7, for whatever bizarre reason.Should address issue #496 without the nasty side effects (and reversion).
e.g. fixes errors seen in: https://travis-ci.org/mattgodbolt/seasocks/jobs/86310974 (now https://travis-ci.org/mattgodbolt/seasocks/jobs/86313317)