Revert "Maintain only one unlock position in parse_submit"

This reverts commit 8fab45147d.

src/stratifier.c

@@ -1913,7 +1913,8 @@ static json_t *parse_submit(stratum_instance_t *client, json_t *json_msg,
 		json_set_string(json_msg, "reject-reason", SHARE_ERR(err));
 		strcpy(idstring, job_id);
 		ASPRINTF(&fname, "%s.sharelog", current_workbase->logdir);
-		goto out_unlock;
+		ck_runlock(&workbase_lock);
+		goto out;
 	}
 	share = true;
 	wdiff = wb->diff;
@@ -1949,9 +1950,6 @@ static json_t *parse_submit(stratum_instance_t *client, json_t *json_msg,
 out_unlock:
 	ck_runlock(&workbase_lock);
 
-	if (unlikely(!share))
-		goto out;
-
 	if (submit)
 		submit_share(client, id, nonce2, ntime, nonce, json_integer_value(json_object_get(json_msg, "id")));