BUG/MEDIUM: stick-tables: refcount error after copying SC for the session to the stream

Each copyied SC counter will be used and released by the stream, so we
need to increment the refcount.
diff --git a/src/stream.c b/src/stream.c
index 910b309..c745ecf 100644
--- a/src/stream.c
+++ b/src/stream.c
@@ -71,6 +71,7 @@
 	struct stream *s;
 	struct connection *conn = objt_conn(origin);
 	struct appctx *appctx   = objt_appctx(origin);
+	int i;
 
 	if (unlikely((s = pool_alloc2(pool2_stream)) == NULL))
 		return s;
@@ -107,7 +108,13 @@
 	s->current_rule_list = NULL;
 	s->current_rule = NULL;
 
+	/* Copy SC counters for the stream. Each SC counter will be used by
+	 * the stream, so we need to increment the refcount.
+	 */
 	memcpy(s->stkctr, sess->stkctr, sizeof(s->stkctr));
+	for (i = 0; i < MAX_SESS_STKCTR; i++)
+		if (stkctr_entry(&s->stkctr[i]))
+			stkctr_entry(&s->stkctr[i])->ref_cnt++;
 
 	s->sess = sess;
 	s->si[0].flags = SI_FL_NONE;