#i119512#, when importing MS Excel, if there is blank item selected in page…

#i119512#, when importing MS Excel, if there is blank item selected in page filed of Pivot Table, the selection will be lost 

Found by: shan zhu
Patch by: bjcheny
Review by: Yolanda Zhang Ying

oox/source/xls/pivottablebuffer.cxx

@@ -646,7 +646,6 @@ void PivotTableField::convertPageField( const PTPageFieldModel& rPageField )
                 if( const PivotCacheItem* pSharedItem = pCacheField->getCacheItem( nCacheItem ) )
                 {
                     OUString aSelectedPage = pSharedItem->getName();
-                    if( aSelectedPage.getLength() > 0 )
                     aPropSet.setProperty( PROP_SelectedPage, aSelectedPage );
                 }
             }