tests: finish wrong-key STCP case when handshake closes

tests/test_stcp_link.c

@@ -84,9 +84,15 @@ static int test2_wrong_key(void) {
                                                   0, 200, 0, on_cli_ready, &cli_ready, NULL, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL);
     TASSERT(sc);
 
-    int ticks = 0;
-    while (ticks < 2000) { uasync_poll(ua, 10); ticks++; }
+    // Неверный ключ должен завершить handshake закрытием, без создания серверного линка.
+    struct stcp_conn* conn = stcp_client_get_conn(sc); TASSERT(conn);
+    uint64_t start = get_time_tb(), deadline = start + 20000;
+    while (conn->state != STCP_STATE_CLOSED && get_time_tb() < deadline) uasync_poll(ua, 10);
+    TASSERT(conn->state == STCP_STATE_CLOSED);
+    TASSERT(!cli_ready);
     TASSERT(!g_on_srv_link);  // should NOT connect with wrong key
+    DEBUG_INFO(DEBUG_CATEGORY_GENERAL, "STCP wrong-key test: handshake closed without READY/link elapsed_tb=%llu",
+               (unsigned long long)(get_time_tb() - start));
 
     stcp_client_destroy(sc);
     stcp_link_server_destroy(ss);