Fixed Follow bug, introduced by latest sharedInbox change.

html.c

@@ -1215,10 +1215,11 @@ int html_post_handler(d_char *req, char *q_path, d_char *payload, int p_size,
             if (msg != NULL) {
                 /* reload the actor from the message, in may be different */
                 actor = xs_dict_get(msg, "object");
+                xs *inbox = get_actor_inbox(&snac, actor);
 
                 following_add(&snac, actor, msg);
 
-                enqueue_output(&snac, msg, actor, 0);
+                enqueue_output(&snac, msg, inbox, 0);
             }
         }
         else

snac.h

@@ -125,6 +125,7 @@ d_char *msg_update(snac *snac, char *object);
 int activitypub_request(snac *snac, char *url, d_char **data);
 int actor_request(snac *snac, char *actor, d_char **data);
 int send_to_inbox(snac *snac, char *inbox, char *msg, d_char **payload, int *p_size);
+d_char *get_actor_inbox(snac *snac, char *actor);
 int send_to_actor(snac *snac, char *actor, char *msg, d_char **payload, int *p_size);
 int is_msg_public(snac *snac, char *msg);
 void process_queue(snac *snac);