Bugfix: Incorrectly checking byte width when already inside a character.

Bugfix: Incorrectly checking byte width when already inside a character.

The width has already been determined, so these values are parts of a UTF-8 character.
The code is doing a byte check and attempting to verify or process this as a new UTF-8 character sequence.
This results in an inaccurate data from that point forward for the rest of the file.