pvs-studio: A part of conditional expression is always true: bDisplayOK

Change-Id: If01f2d3b02219194cbeaeffbb0fd8242320432a8
Reviewed-on: https://gerrit.libreoffice.org/62056
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

xmloff/source/text/txtvfldi.cxx

@@ -205,7 +205,7 @@ void XMLVarFieldImportContext::PrepareField(
 
     if (bSetVisible && bDisplayOK)
     {
-        bool bTmp = ! (bDisplayNone && bDisplayOK);
+        bool bTmp = !bDisplayNone;
         xPropertySet->setPropertyValue(sAPI_is_visible, Any(bTmp));
     }