Scanning nil for null.Time creates value with Valid = false rather than erroring

time.go

@@ -21,6 +21,9 @@ func (t *Time) Scan(value interface{}) error {
 	switch x := value.(type) {
 	case time.Time:
 		t.Time = x
+	case nil:
+		t.Valid = false
+		return nil
 	default:
 		err = fmt.Errorf("null: cannot scan type %T into null.Time: %v", value, value)
 	}