No longer clears useron number in node listing. Multinode chat users need this

value to display the user name that left multinode chat (disconnected).

src/sbbs3/main.cpp

@@ -2857,7 +2857,7 @@ void node_thread(void* arg)
 		node.status=NODE_WFC;
 	node.misc&=~(NODE_DOWN|NODE_INTR|NODE_MSGW|NODE_NMSG
 				|NODE_UDAT|NODE_POFF|NODE_AOFF|NODE_EXT);
-	node.useron=0;
+/*	node.useron=0; needed for hang-ups while in multinode chat */
 	sbbs->putnodedat(sbbs->cfg.node_num,&node);
 
 	if(node_threads_running>0)