MINOR: stream: Improve dump of bogus streams

Stream flags and information about the HTTP txn, if defined, are now
emitted. This will help us to identify bugs when such message is reported.

(cherry picked from commit e8f3596cd0be8044b0c2e71deb7d100cfe030c79)
Signed-off-by: Willy Tarreau <w@1wt.eu>
diff --git a/src/stream.c b/src/stream.c
index 4775d7a..cb2c754 100644
--- a/src/stream.c
+++ b/src/stream.c
@@ -2747,14 +2747,18 @@
 		dst = acb->applet->name;
 
 	chunk_appendf(buf,
-	              "%sstrm=%p src=%s fe=%s be=%s dst=%s%c"
+	              "%sstrm=%p,%x src=%s fe=%s be=%s dst=%s%c"
+		      "%stxn=%p,%x txn.req=%s,%x txn.rsp=%s,%x%c"
 	              "%srqf=%x rqa=%x rpf=%x rpa=%x sif=%s,%x sib=%s,%x%c"
 	              "%saf=%p,%u csf=%p,%x%c"
 	              "%sab=%p,%u csb=%p,%x%c"
 	              "%scof=%p,%x:%s(%p)/%s(%p)/%s(%d)%c"
 	              "%scob=%p,%x:%s(%p)/%s(%p)/%s(%d)%c"
 	              "",
-	              pfx, s, src, s->sess->fe->id, s->be->id, dst, eol,
+	              pfx, s, s->flags, src, s->sess->fe->id, s->be->id, dst, eol,
+		      pfx, s->txn, (s->txn ? s->txn->flags : 0),
+		           (s->txn ? h1_msg_state_str(s->txn->req.msg_state): "-"), (s->txn ? s->txn->req.flags : 0),
+		           (s->txn ? h1_msg_state_str(s->txn->rsp.msg_state): "-"), (s->txn ? s->txn->rsp.flags : 0), eol,
 	              pfx, req->flags, req->analysers, res->flags, res->analysers,
 	                   si_state_str(si_f->state), si_f->flags,
 	                   si_state_str(si_b->state), si_b->flags, eol,