CLEANUP: stream: Properly indent current_rule line in "show sess all"

This line is not related to the response channel but to the stream. Thus it
must be indented at the same level as stream-interfaces, connections,
channels...
diff --git a/src/stream.c b/src/stream.c
index 6d6374d..4fc22b8 100644
--- a/src/stream.c
+++ b/src/stream.c
@@ -3435,7 +3435,7 @@
 
 		if (strm->current_rule_list && strm->current_rule) {
 			const struct act_rule *rule = strm->current_rule;
-			chunk_appendf(&trash, "      current_rule=\"%s\" [%s:%d]\n", rule->kw->kw, rule->conf.file, rule->conf.line);
+			chunk_appendf(&trash, "  current_rule=\"%s\" [%s:%d]\n", rule->kw->kw, rule->conf.file, rule->conf.line);
 		}
 
 		if (ci_putchk(si_ic(si), &trash) == -1)