UserStatusDialog.cpp: Fix timezone

This test fails on the day before a timezone switch:
   Actual   (model.clearAtDisplayString()): "23 hours"
   Expected (tr("1 day"))                 : "1 day"

Setting the timezone to UTC remedies this problem.

Signed-off-by: Thomas Witt <[email protected]>

test/testsetuserstatusdialog.cpp

@@ -187,7 +187,7 @@ class TestSetUserStatusDialog : public QObject
 private slots:
     void testCtor_fetchStatusAndPredefinedStatuses()
     {
-        const QDateTime currentDateTime(QDateTime::currentDateTime());
+        const QDateTime currentDateTime(QDateTime::currentDateTimeUtc());
 
         const QString userStatusId("fake-id");
         const QString userStatusMessage("Some status");