fix cleanup of non-expiring mytokens

CHANGELOG.md

@@ -36,6 +36,7 @@
 - Fixed a bug in the mytoken webinterface where token introspection did not work on the settings page
 - Fixed a bug in the mytoken webinterface restriction editor, where audiences would always be set to zero when switching
   from the JSON editor to the GUI editor
+- Fixed a bug where non-expiring mytokens would be revoked when database cleanup was enabled.
 
 ### Dependencies
 

shared/utils/unixtime/unixtime.go

@@ -15,6 +15,9 @@ type UnixTime int64
 
 // Time returns the UnixTime as time.Time
 func (t UnixTime) Time() time.Time {
+	if t == 0 {
+		return time.Time{}
+	}
 	return time.Unix(int64(t), 0)
 }