h3 do not send CONNECTION_CLOSE frame on lossy connections about lsquic HOT 4 CLOSED

diff --git a/src/liblsquic/lsquic_full_conn_ietf.c b/src/liblsquic/lsquic_full_conn_ietf.c
index fd8501a..2d1de0c 100644
--- a/src/liblsquic/lsquic_full_conn_ietf.c
+++ b/src/liblsquic/lsquic_full_conn_ietf.c
@@ -8574,7 +8574,8 @@ ietf_full_conn_ci_tick (struct lsquic_conn *lconn, lsquic_time_t now)
                     || 0 != lsquic_send_ctl_n_scheduled(&conn->ifc_send_ctl))
                 )
         {
-            RETURN_IF_OUT_OF_PACKETS();
+            /* CONNECTION_CLOSE frame should not be congestion controlled.
+            RETURN_IF_OUT_OF_PACKETS(); */
             generate_connection_close_packet(conn);
             tick |= TICK_SEND|TICK_CLOSE;
         }