When setting up to get a TGT for the service realm in the TGS code,
get the cached local TGT before setting up the realm path.
Prior to this change, calling krb5_get_credentials() with an empty
ccache would result in KRB5_CC_NOTFOUND for a foreign server
principal, but would result in KRB5_NO_TKT_IN_REALM (generated by
krb5_walk_realm_tree) for a local server principal. With this change,
KRB5_CC_NOTFOUND is returned in both cases.
git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@23909
dc483132-0cff-0310-8789-
dd5450dbe970