BUG/MEDIUM: h2: Don't wait for flow control if the connection had a shutr.

In h2_snd_buf(), if we couldn't send the data because of flow control, and
the connection got a shutr, then add CS_FL_ERROR (or CS_FL_ERR_PENDING). We
will never get any window update, so we will never be unlocked, anyway.

No backport is needed.
1 file changed