From: Ralph Corderoy <ralph@inputplus.co.uk>
Date: Sun, 20 Aug 2017 10:38:04 +0000 (+0100)
Subject: contains8bit(): Don't fetch a byte when start >= end.
X-Git-Url: https://diplodocus.org/git/nmh/commitdiff_plain/dc7efebe09e15e0e9e8a7821602c5052f00ef9b9?ds=inline;hp=dc7efebe09e15e0e9e8a7821602c5052f00ef9b9

contains8bit(): Don't fetch a byte when start >= end.

The test for a NUL byte was before the test for start being before end.
Whilst here, hoist the test of end out of the per-byte loop, alter the
function to return bool, and merge the two, different, comments
explaining the function's behaviour.
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