xcap_client: fix what it seems to be an old copy/paste error

modules/xcap_client/xcap_functions.c

@@ -85,8 +85,8 @@ void xcapFreeNodeSel(xcap_node_sel_t* node)
 	{
 		m= n;
 		n= n->next;
-		pkg_free(n->value.s);
-		pkg_free(n);
+		pkg_free(m->value.s);
+		pkg_free(m);
 	}
 
 	pkg_free(node);