v0.0.589 improve Equal method of rfctime structs - prevents panic in cmp library

rfctime/unix.go

@@ -4,11 +4,11 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"go.mongodb.org/mongo-driver/bson"
 	"go.mongodb.org/mongo-driver/bson/bsoncodec"
 	"go.mongodb.org/mongo-driver/bson/bsonrw"
 	"go.mongodb.org/mongo-driver/bson/bsontype"
-	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"reflect"
 	"strconv"
 	"time"
@@ -136,7 +136,13 @@ func (t UnixTime) Before(u AnyTime) bool {
 	return t.Time().Before(tt(u))
 }
 
-func (t UnixTime) Equal(u AnyTime) bool {
+func (t *UnixTime) Equal(u AnyTime) bool {
+	if t == nil && u == nil {
+		return true
+	}
+	if t == nil || u == nil {
+		return false
+	}
 	return t.Time().Equal(tt(u))
 }