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/debug.c b/src/debug.c
index 5dcd96e..c6b541d 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -252,7 +252,7 @@
 		s = (struct stream *)task->context;
 	else if (task->process == task_run_applet && task->context)
 		s = sc_strm(appctx_cs((struct appctx *)task->context));
-	else if (task->process == cs_conn_io_cb && task->context)
+	else if (task->process == sc_conn_io_cb && task->context)
 		s = sc_strm(((struct stconn *)task->context));
 
 	if (s)