CLEANUP: stconn: rename cs_conn_*() to sc_conn_*()

The following functions which act on a connection-based stream connector
were renamed to sc_conn_* (~60 places):

  cs_conn_drain_and_shut
  cs_conn_process
  cs_conn_read0
  cs_conn_ready
  cs_conn_recv
  cs_conn_send
  cs_conn_shut
  cs_conn_shutr
  cs_conn_shutw
diff --git a/src/cli.c b/src/cli.c
index b91b392..e684620 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -2766,7 +2766,7 @@
 		/* only release our endpoint if we don't intend to reuse the
 		 * connection.
 		 */
-		if (!cs_conn_ready(s->scb)) {
+		if (!sc_conn_ready(s->scb)) {
 			s->srv_conn = NULL;
 			if (cs_reset_endp(s->scb) < 0) {
 				if (!s->conn_err_type)