uasync: pass socket name to all add_socket call sites

tests/test_uasync_socket_race.c

@@ -138,7 +138,7 @@ int main(void) {
     la.sin_addr.s_addr = inet_addr("127.0.0.1");
     if (bind(lsock, (struct sockaddr*)&la, sizeof(la)) < 0) { printf("[FAIL] bind: %s\n", strerror(errno)); goto cleanup; }
     if (listen(lsock, 1024) < 0) { printf("[FAIL] listen: %s\n", strerror(errno)); goto cleanup; }
-    uasync_add_socket(g_ua, lsock, on_accept_cb, NULL, NULL, NULL);
+    uasync_add_socket(g_ua, lsock, on_accept_cb, NULL, NULL, "test_listen", NULL);
 
     for (int i = 0; i < CHILDREN; i++) {
         pid_t pid = fork();