_krb5_fast_anon_pkinit_step() should not set
KRB5_INIT_CREDS_STEP_FLAG_CONTINUE if it doesn't generate any output.
And krb5_init_creds_step() needs to return if
_krb5_fast_anon_pkinit_step() returned with
KRB5_INIT_CREDS_STEP_FLAG_CONTINUE set.
As that means the recursive call to krb5_init_creds_step()
generated output that should be send to a KDC and the
KDC response if needed as input for the next step.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
30c978f013