Initialize radio router channels before checking send backpressure

tests/test_radio.c

@@ -117,7 +117,8 @@ static etcp_recv_fn g_call_recv[3];
 static void call_packet_loss(struct ETCP_CONN* conn, struct ll_entry* entry) {
     int idx = -1;
     for (int i = 0; i < 3; ++i) if (conn->instance->node_id == g_sh.nid[i]) idx = i;
-    if (idx < 0 || !entry || entry->len <= ROUTER_SVC_PAYLOAD_OFF) abort();
+    if (idx < 0 || !entry) abort();
+    if (entry->len <= ROUTER_SVC_PAYLOAD_OFF) { g_call_recv[idx](conn, entry); return; }
     int cmd = entry->dgram[ROUTER_SVC_PAYLOAD_OFF];
     if ((idx == IDX_A && cmd == 3 && g_drop_result-- > 0) || (idx == IDX_C && cmd == 4 && g_drop_ack-- > 0)) {
         DEBUG_INFO(DEBUG_CATEGORY_RADIO, "test drops radio result/ACK dst=%d command=%d", idx, cmd);