* krb.h (krb4_swab16): Mask upper byte of input after shifting, in case the

* krb.h (krb4_swab16): Mask upper byte of input after shifting, in case the
input value is a signed short.
(krb4_swab32): Mask high byte of input value after shifting, to avoid "time out
of bounds" error when byte orders are different and low byte of timestamp has
its high bit set and the timestamp is stored as a signed value.
(krb_get_err_text): Don't use "errno" as an argument name.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@12439 dc483132-0cff-0310-8789-dd5450dbe970