coverity#705973 Dereference before null check

Change-Id: Iee76f24ad73d103507594fb1433fba7d1294d759

vcl/unx/generic/window/salframe.cxx

@@ -2595,7 +2595,8 @@ bool X11SalFrame::SetPluginParent( SystemParentData* pNewParent )
 {
     if( pNewParent->nSize >= sizeof(SystemParentData) )
         m_bXEmbed = pNewParent->aWindow != None && pNewParent->bXEmbedSupport;
-    createNewWindow( pNewParent ? pNewParent->aWindow : None );
+
+    createNewWindow(pNewParent->aWindow);
 
     return true;
 }