Revert "Don’t send the unavailable presence to all resources, in the virtual channel"

This reverts commit 38ff50f5.

src/bridge/bridge.cpp

@@ -62,7 +62,7 @@ void Bridge::shutdown(const std::string& exit_message)
   for (auto it = this->irc_clients.begin(); it != this->irc_clients.end(); ++it)
   {
     it->second->send_quit_command(exit_message);
-    it->second->leave_dummy_channel(exit_message, "");
+    it->second->leave_dummy_channel(exit_message);
   }
 }
 

src/irc/irc_client.cpp

@@ -1161,14 +1161,14 @@ DummyIrcChannel& IrcClient::get_dummy_channel()
   return this->dummy_channel;
 }
 
-void IrcClient::leave_dummy_channel(const std::string& exit_message, const std::string& resource)
+void IrcClient::leave_dummy_channel(const std::string& exit_message)
 {
   if (!this->dummy_channel.joined)
     return;
   this->dummy_channel.joined = false;
   this->dummy_channel.joining = false;
   this->dummy_channel.remove_all_users();
-  this->bridge.send_muc_leave(Iid("%"s + this->hostname, this->chantypes), std::string(this->current_nick), exit_message, true, resource);
+  this->bridge.send_muc_leave(Iid("%"s + this->hostname, this->chantypes), std::string(this->current_nick), exit_message, true);
 }
 
 #ifdef BOTAN_FOUND