MEDIUM: stream: Stop to use SE flags to detect read errors from analyzers

In the same way the previous commit, we stop to use SE_FL_ERROR flag from
analyzers and their sub-functions. We now fully rely on SC_FL_ERROR to do so.
diff --git a/src/cli.c b/src/cli.c
index 14b92a5..fb8f687 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -2715,7 +2715,7 @@
 	struct proxy *fe = strm_fe(s);
 	struct proxy *be = s->be;
 
-	if ((s->scb->flags & SC_FL_ERROR) || sc_ep_test(s->scb, SE_FL_ERROR) || (rep->flags & (CF_READ_TIMEOUT|CF_WRITE_TIMEOUT)) ||
+	if ((s->scb->flags & SC_FL_ERROR) || (rep->flags & (CF_READ_TIMEOUT|CF_WRITE_TIMEOUT)) ||
 	    ((s->scf->flags & SC_FL_SHUT_DONE) && (rep->to_forward || co_data(rep)))) {
 		pcli_reply_and_close(s, "Can't connect to the target CLI!\n");
 		s->req.analysers &= ~AN_REQ_WAIT_CLI;