make std.c.getErrno() return same type as _errno() aka c_int
adjust std.os.unexpectedErrno() to be correct for all std.os.system.errno (c_int, u12, usize, ...)
89e522b935Sébastien Marie committed on 3/12/2021, 2:04:36 PM· committed by Isaac Freundparente9a038c