coverity#705041 Dereference after null check

Change-Id: I94b1f0e6d1f8bdf7929b68682727e8b1fdde67d2

sw/source/uibase/utlui/glbltree.cxx

@@ -832,9 +832,12 @@ void    SwGlobalTree::ExcecuteContextMenuAction( sal_uInt16 nSelectedPopupEntry
         case CTX_EDIT_LINK:
         {
             OSL_ENSURE(pCont, "edit without entry ? " );
-            SfxStringItem aName(FN_EDIT_REGION,
-                    pCont->GetSection()->GetSectionName());
-            rDispatch.Execute(FN_EDIT_REGION, SFX_CALLMODE_ASYNCHRON, &aName, 0L);
+            if (pCont)
+            {
+                SfxStringItem aName(FN_EDIT_REGION,
+                        pCont->GetSection()->GetSectionName());
+                rDispatch.Execute(FN_EDIT_REGION, SFX_CALLMODE_ASYNCHRON, &aName, 0L);
+            }
         }
         break;
         case CTX_DELETE: