copy values from the original item set

... because SfxAbstractDialog::GetOutputItemSet() only contains the
items that have been _changed_ in the dialog.

Change-Id: Iaf20bb42b65e420fe4e7aff979378eff7b5e5df2
(cherry picked from commit 9cd71f99)

Change-Id: I9100dbe05c418a9dd1b819534a08076c9a4aed1c
Reviewed-on: https://gerrit.libreoffice.org/4145Reviewed-by: Fridrich Strba <fridrich@documentfoundation.org>
Tested-by: Fridrich Strba <fridrich@documentfoundation.org>

svx/source/table/tablecontroller.cxx

@@ -726,7 +726,8 @@ void SvxTableController::onFormatTable( SfxRequest& rReq )
         std::auto_ptr< SfxAbstractTabDialog > pDlg( pFact ? pFact->CreateSvxFormatCellsDialog( NULL, &aNewAttr, pTableObj->GetModel(), pTableObj) : 0 );
         if( pDlg.get() && pDlg->Execute() )
         {
-            SfxItemSet aNewSet( *(pDlg->GetOutputItemSet ()) );
+            SfxItemSet aNewSet( aNewAttr );
+            aNewSet.Put( *(pDlg->GetOutputItemSet ()) );
 
             SvxBoxItem aNewBoxItem( static_cast< const SvxBoxItem& >( aNewSet.Get( SDRATTR_TABLE_BORDER ) ) );