Wladimir J. van der Laan 332b3dd7c1 util: Make ToLower and ToUpper take a char ...

Unfortunately, `std::string` elements are (bare) chars. As these
are the most likely type to be passed to these functions, make them use
char instead of unsigned char. This avoids some casts.

2019-01-10 02:51:14 +01:00

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