pull up r20561 from trunk (includes unrelated cleanup of dead assignment) r20561 at cathode-dark-space: raeburn | 2008-07-21 16:59:24 -0400 ticket: 5980 Another check for null return from krb5_cc_default_name. Commit By: tlyu Revision: 20565 Changed Files: _U branches/krb5-1-6/ U branches/krb5-1-6/src/lib/krb5/ccache/ccdefault.c