chat_core_connect_auto: set peer_node_id on ETCP_CONN

Without peer_node_id, incoming INIT handler can't find the existing
outbound connection, creates a new one, and fails on insert_link collision.

tools/chatgui/transport/chat_core.c

@@ -1050,6 +1050,7 @@ void chat_core_connect_auto(uint64_t node_id,
         }
         sc_init_ctx(&conn->crypto_ctx, &g_cc.inst->my_keys);
         sc_set_peer_public_key(&conn->crypto_ctx, pubkey, 0);
+        conn->peer_node_id = node_id;
 
         struct ca_ctx* pctx = u_calloc(1, sizeof(struct ca_ctx));
         if (!pctx) { etcp_connection_close(conn); pst->conns[i] = NULL; pst->timers[i] = NULL; pst->pending_count--; continue; }