gssapi_init(): handle gss_canonicalize_name() failure properly, and don't try to print the creds in a debugging message if gss_export_name() failed (the creds won't be initialized in the case of failure).
gssapi_init(): handle gss_canonicalize_name() failure properly,
and don't try to print the creds in a debugging message if
gss_export_name() failed (the creds won't be initialized in
the case of failure).

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