add omemo echo

omemo.c

@@ -2614,12 +2614,15 @@ xmpp_stanza_t *omemo__encode(struct t_account *account, const char *jid,
 
     int ret, keycount = 0;
     signal_int_list *devicelist;
-    if ((ret = dls_load_devicelist(&devicelist, jid, omemo))) return NULL;
+    const char *target = jid;
+    for (int self = 0; self <= 1; self++)
+    {
+        if ((ret = dls_load_devicelist(&devicelist, target, omemo))) return NULL;
         for (size_t i = 0; i < signal_int_list_size(devicelist); i++)
         {
             uint32_t device_id = signal_int_list_at(devicelist, i);
             signal_protocol_address address = {
-            .name = jid, .name_len = strlen(jid), .device_id = device_id};
+                .name = target, .name_len = strlen(target), .device_id = device_id};
 
             xmpp_stanza_t *header__key = xmpp_stanza_new(account->context);
             xmpp_stanza_set_name(header__key, "key");
@@ -2671,6 +2674,8 @@ xmpp_stanza_t *omemo__encode(struct t_account *account, const char *jid,
                 session_builder_free(builder);
         }
         signal_int_list_free(devicelist);
+        target = account_jid(account);
+    }
     free(key_and_tag);
 
     if (keycount == 0) return NULL;