Followup, Bug 366337 - forgot to remove XXX comment. Sorry.

r=emaijala@kolumbus.fi (Ere Maijala)
sr=neil@parkwaycc.co.uk (Neil Rashbrook)

widget/src/windows/nsIdleServiceWin.cpp

@@ -51,7 +51,7 @@ nsIdleServiceWin::GetIdleTime(PRUint32 *aTimeDiff)
     inputInfo.cbSize = sizeof(inputInfo);
     if (!::GetLastInputInfo(&inputInfo))
         return NS_ERROR_FAILURE;
-    //XXXgijs: this might break after 49.7 days, see MSDN docs for GetTickCount.
+
     *aTimeDiff = GetTickCount() - inputInfo.dwTime;
     return NS_OK;
 }