Use authcid as authzid for digest auth

Author: benlangfeld

src/cyrsasl_digest.erl

@@ -95,7 +95,7 @@ mech_step(#state{step = 3, nonce = Nonce} = State,
 		case (State#state.get_password)(UserName) of
 		  {false, _} -> {error, <<"not-authorized">>, UserName};
 		  {Passwd, AuthModule} ->
-		      case (State#state.check_password)(UserName, AuthzId, <<"">>,
+		      case (State#state.check_password)(UserName, UserName, <<"">>,
 		                    proplists:get_value(<<"response">>, KeyVals, <<>>),
 							fun (PW) ->
 								response(KeyVals,