BUG/MINOR: http-ana: Report SF_FINST_R flag on error waiting the request body

When we wait for the request body, we are still in the request analysis. So
a SF_FINST_R flag must be reported in logs. Even if some data are already
received, at this staged, nothing is sent to the server.

This patch could be backported in all stable versions.
diff --git a/reg-tests/http-messaging/http_request_buffer.vtc b/reg-tests/http-messaging/http_request_buffer.vtc
index e9a90c5..15ec540 100644
--- a/reg-tests/http-messaging/http_request_buffer.vtc
+++ b/reg-tests/http-messaging/http_request_buffer.vtc
@@ -24,7 +24,7 @@
 
 syslog S -level info {
 	recv
-	expect ~ "[^:\\[ ]*\\[[0-9]*\\]: .* .* fe1 fe1/<NOSRV> .* 408 .* - - cD-- .* .* \"GET /this-is-a-long-url-this-is-a-long-url-this-is-a-long-url-this-is-a-long-url-this-is-a-long-url-this-is-a-long-url-this-is-a-long-url HTTP/1\\.1\""
+	expect ~ "[^:\\[ ]*\\[[0-9]*\\]: .* .* fe1 fe1/<NOSRV> .* 408 .* - - cR-- .* .* \"GET /this-is-a-long-url-this-is-a-long-url-this-is-a-long-url-this-is-a-long-url-this-is-a-long-url-this-is-a-long-url-this-is-a-long-url HTTP/1\\.1\""
 	barrier b1 sync
 
 	recv
diff --git a/src/http_ana.c b/src/http_ana.c
index edd635d..8c32b7a 100644
--- a/src/http_ana.c
+++ b/src/http_ana.c
@@ -891,9 +891,8 @@
 {
 	struct session *sess = s->sess;
 	struct http_txn *txn = s->txn;
-	struct http_msg *msg = &s->txn->req;
 
-	DBG_TRACE_ENTER(STRM_EV_STRM_ANA|STRM_EV_HTTP_ANA, s, txn, msg);
+	DBG_TRACE_ENTER(STRM_EV_STRM_ANA|STRM_EV_HTTP_ANA, s, txn, &s->txn->req);
 
 
 	switch (http_wait_for_msg_body(s, req, s->be->timeout.httpreq, 0)) {
@@ -951,7 +950,7 @@
 	if (!(s->flags & SF_ERR_MASK))
 		s->flags |= SF_ERR_PRXCOND;
 	if (!(s->flags & SF_FINST_MASK))
-		s->flags |= (msg->msg_state < HTTP_MSG_DATA ? SF_FINST_R : SF_FINST_D);
+		s->flags |= SF_FINST_R;
 
 	req->analysers &= AN_REQ_FLT_END;
 	req->analyse_exp = TICK_ETERNITY;
@@ -4229,7 +4228,7 @@
 	if (!(s->flags & SF_ERR_MASK))
 		s->flags |= SF_ERR_CLITO;
 	if (!(s->flags & SF_FINST_MASK))
-		s->flags |= SF_FINST_D;
+		s->flags |= SF_FINST_R;
 	_HA_ATOMIC_INC(&sess->fe->fe_counters.failed_req);
 	if (sess->listener && sess->listener->counters)
 		_HA_ATOMIC_INC(&sess->listener->counters->failed_req);
@@ -4242,7 +4241,7 @@
 	if (!(s->flags & SF_ERR_MASK))
 		s->flags |= SF_ERR_SRVTO;
 	if (!(s->flags & SF_FINST_MASK))
-		s->flags |= SF_FINST_D;
+		s->flags |= SF_FINST_R;
 	stream_inc_http_fail_ctr(s);
 	http_reply_and_close(s, txn->status, http_error_message(s));
 	ret = HTTP_RULE_RES_ABRT;