ident_i2send(): return failure if gssapi_get_itoken() fails.
ident_i2send(): return failure if gssapi_get_itoken() fails.

From George Yang <gyang@zembu.com>.

MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame