Richard Levitte 18295f0c2d Make sure to use unsigned char for is*() functions ...

On some platforms, the implementation is such that a signed char
triggers a warning when used with is*() functions.  On others, the
behavior is outright buggy when presented with a char that happens
to get promoted to a negative integer.

The safest thing is to cast the char that's used to an unsigned char.

Reviewed-by: Andy Polyakov <appro@openssl.org>

2016-02-14 19:31:55 +01:00

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