Delete empty bridges objects

src/bridge/bridge.cpp

@@ -249,6 +249,11 @@ std::string Bridge::get_own_nick(const Iid& iid)
   return "";
 }
 
+size_t Bridge::connected_clients() const
+{
+  return this->irc_clients.size();
+}
+
 void Bridge::kick_muc_user(Iid&& iid, const std::string& target, const std::string& reason, const std::string& author)
 {
   this->xmpp->kick_user(iid.chan + "%" + iid.server, target, reason, author, this->user_jid);

src/bridge/bridge.hpp

@@ -104,6 +104,10 @@ public:
    * Misc
    */
   std::string get_own_nick(const Iid& iid);
+  /**
+   * Get the number of server to which this bridge is connected.
+   */
+  size_t connected_clients() const;
 
 private:
   /**

src/xmpp/xmpp_component.cpp

@@ -99,9 +99,14 @@ void XmppComponent::shutdown()
 
 void XmppComponent::clean()
 {
-  for (auto it = this->bridges.begin(); it != this->bridges.end(); ++it)
+  auto it = this->bridges.begin();
+  while (it != this->bridges.end())
   {
     it->second->clean();
+    if (it->second->connected_clients() == 0)
+      it = this->bridges.erase(it);
+    else
+      ++it;
   }
 }