Hiredis update removes the need for this.

cmd.c

@@ -40,7 +40,6 @@ struct pubsub_client {
 	struct evhttp_request *rq;
 };
 
-void __redisAsyncDisconnect(redisAsyncContext *ac);
 void on_http_disconnect(struct evhttp_connection *evcon, void *ctx) {
 	struct pubsub_client *ps = ctx;
 

formats/json.c

@@ -44,14 +44,8 @@ json_reply(redisAsyncContext *c, void *r, void *privdata) {
 	evhttp_add_header(cmd->rq->output_headers, "Content-Type", "application/json");
 
 	if(cmd_is_subscribe(cmd)) {
-		redisCallback cb;
 		free_cmd = 0;
 
-		/* reinstall callback */
-		cb.fn = json_reply;
-		cb.privdata = privdata;
-		__redisPushCallback(&c->replies, &cb);
-
 		/* start streaming */
 		if(cmd->started_responding == 0) {
 			cmd->started_responding = 1;