cid#1448540 Dereference null return value

Change-Id: I72fd7c1a38cb870d99ee085f4f511f2fb9d8d7af
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/152343
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>
diff --git a/sw/source/uibase/uiview/viewtab.cxx b/sw/source/uibase/uiview/viewtab.cxx
index 87cac89..d99e27f 100644
--- a/sw/source/uibase/uiview/viewtab.cxx
+++ b/sw/source/uibase/uiview/viewtab.cxx
@@ -2467,15 +2467,18 @@ void SwView::StateTabWin(SfxItemSet& rSet)
            const SwFormatFooter& rFooter = rDesc.GetMaster().GetFooter();
            bool bFooterOn = rFooter.IsActive();
            rSet.Put( SfxBoolItem(SID_ATTR_PAGE_FOOTER, bFooterOn ) );
            if(bFooterOn)
            if (bFooterOn)
            {
                const SvxLRSpaceItem* rLR = rFooter.GetFooterFormat()->GetAttrSet().GetItem<SvxLRSpaceItem>(SID_ATTR_LRSPACE);
                const SvxULSpaceItem* rUL = rFooter.GetFooterFormat()->GetAttrSet().GetItem<SvxULSpaceItem>(SID_ATTR_ULSPACE);
                SvxLongLRSpaceItem aLR(rLR->GetLeft(), rLR->GetRight(), SID_ATTR_PAGE_FOOTER_LRMARGIN);
                rSet.Put(aLR);
                SvxLongULSpaceItem aUL( rUL->GetUpper(), rUL->GetLower(), SID_ATTR_PAGE_FOOTER_SPACING);
                rSet.Put(aUL);

                if (const SvxLRSpaceItem* rLR = rFooter.GetFooterFormat()->GetAttrSet().GetItem<SvxLRSpaceItem>(SID_ATTR_LRSPACE))
                {
                    SvxLongLRSpaceItem aLR(rLR->GetLeft(), rLR->GetRight(), SID_ATTR_PAGE_FOOTER_LRMARGIN);
                    rSet.Put(aLR);
                }
                if (const SvxULSpaceItem* rUL = rFooter.GetFooterFormat()->GetAttrSet().GetItem<SvxULSpaceItem>(SID_ATTR_ULSPACE))
                {
                    SvxLongULSpaceItem aUL( rUL->GetUpper(), rUL->GetLower(), SID_ATTR_PAGE_FOOTER_SPACING);
                    rSet.Put(aUL);
                }
                bool bShared = !rDesc.IsFooterShared();
                bool bFirst = !rDesc.IsFirstShared(); // FIXME control changes for both header footer - tdf#100287
                sal_uInt16 nLayout = (static_cast<int>(bShared)<<1) + static_cast<int>(bFirst);