tree 534260b8a3db59d532fae8f43f990ba09e2612df
parent 73c17f04b51fa360413b90adab5401a5c947e8df
author Kirill Makurin <maiddaisuki@outlook.com> 1757151968 +0900
committer LIU Hao <lh_mouse@126.com> 1757256824 +0800
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crt: avoid sign-extension of argument to isleadbyte in mbrtowc

Passing an argument of type `char` to isleadbyte may result in
sign-extension of its argument. crtdll.dll's isleadbyte does not
handle sign-extended input properly, which result in incorrect
behavior of mbrlen and mbrtowc functions.

Add cast to `unsigned char` to avoid this.

Signed-off-by: Kirill Makurin <maiddaisuki@outlook.com>
Signed-off-by: LIU Hao <lh_mouse@126.com>