krb5: pass realm to _krb5_make_fast_ap_fxarmor()

Fix merge issue introduced in ef1d63a9 which did not update the call
site after updating the _krb5_make_fast_ap_fxarmor() prototype to take
the realm (used in the anonymous PKINIT case).

lib/krb5/init_creds_pw.c

@@ -2038,6 +2038,7 @@ make_fast_ap_fxarmor(krb5_context context,
 
 	ret = _krb5_make_fast_ap_fxarmor(context,
 					 state->armor_ccache,
+					 realm,
 					 &fxarmor->armor_value,
 					 &state->armor_key,
 					 &state->armor_crypto);