coverity#735947 Explicit null dereferenced

Change-Id: I8fc9d0eeab6f63be4c815adcbd092d5ff2a96586

sw/source/filter/ww8/wrtww8gr.cxx

@@ -918,15 +918,16 @@ void SwWW8WrGrf::WriteGraphicNode(SvStream& rStrm, const GraphicDetails &rItem)
 
         case sw::Frame::eOle:
         {
-#ifdef OLE_PREVIEW_AS_EMF
             const SwNode *pNode = rItem.maFly.GetContent();
             const SwOLENode *pNd = pNode ? pNode->GetOLENode() : 0;
             OSL_ENSURE(pNd, "Impossible");
+            if (pNd)
+            {
+#ifdef OLE_PREVIEW_AS_EMF
                 if (!rWrt.bWrtWW8)
                 {
                     SwOLENode *pOleNd = const_cast<SwOLENode*>(pNd);
-                OSL_ENSURE( pOleNd, " Wer hat den OleNode versteckt ?" );
-                SwOLEObj&                   rSObj= pOleNd->GetOLEObj();
+                    SwOLEObj& rSObj = pOleNd->GetOLEObj();
                     uno::Reference < embed::XEmbeddedObject > rObj(  rSObj.GetOleRef() );
 
                     comphelper::EmbeddedObjectContainer aCnt( pOleNd->GetDoc()->GetDocStorage() );
@@ -968,7 +969,6 @@ void SwWW8WrGrf::WriteGraphicNode(SvStream& rStrm, const GraphicDetails &rItem)
 #else
                 // cast away const
                 SwOLENode *pOleNd = const_cast<SwOLENode*>(pNd);
-            OSL_ENSURE( pOleNd, " Wer hat den OleNode versteckt ?" );
                 SwOLEObj& rSObj= pOleNd->GetOLEObj();
 
                 // TODO/LATER: do we need to load object?
@@ -990,6 +990,7 @@ void SwWW8WrGrf::WriteGraphicNode(SvStream& rStrm, const GraphicDetails &rItem)
                 delete pGr;
 #endif
             }
+        }
         break;
         case sw::Frame::eDrawing:
         case sw::Frame::eTxtBox: