http2: assortment of small adjustments and clean-up
Because of the speed at which http2 core has been evolving, there's been some accumulation of little quirks and inconsistencies: unused variables, unnecessary variables, strings that should be template strings, etc. This just takes care of some general cleanup and should hopefully — among other things — improve readability a bit.
(Amusingly there's a tiny 2% bump on the http2 headers benchmarks.)
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
commit message follows commit guidelines
Affected core subsystem(s)
http2