sw filter/ww8 code cleanup: remove duplicate variable

Change-Id: I2be36438ca1ab0646aa8f89dfcb317d6a162b072
Reviewed-on: https://gerrit.libreoffice.org/65266
Tested-by: Jenkins
Reviewed-by: Justin Luth <justin_luth@sil.org>

sw/source/filter/ww8/wrtw8nds.cxx

@@ -3046,9 +3046,7 @@ void MSWordExportBase::OutputSectionNode( const SwSectionNode& rSectionNode )
             ReplaceCr( msword::PageBreak ); // Indicator for Page/Section-Break
 
             // Get the page in use at the top of this section
-            SwNodeIndex aIdxTmp(rSectionNode, 1);
-            const SwPageDesc *pCurrent =
-                SwPageDesc::GetPageDescOfNode(aIdxTmp.GetNode());
+            const SwPageDesc *pCurrent = SwPageDesc::GetPageDescOfNode(rNd);
             if (!pCurrent)
                 pCurrent = m_pCurrentPageDesc;