Fix mouse usage in popups, thanks to Paul for spotting the error. Fix…

…es #9667.

    (cherry picked from commit afb8995)

mythtv/libs/libmythui/mythuitype.cpp

@@ -1002,7 +1002,7 @@ void MythUIType::LoadNow(void)
  */
 bool MythUIType::ContainsPoint(const QPoint &point) const
 {
-    if (m_Area.contains(point - m_Area.topLeft()))
+    if (m_Area.contains(point))
         return true;
 
     return false;