Fix a few issues reported by static analyzers

src/bridge/bridge.cpp

@@ -480,7 +480,7 @@ void Bridge::send_user_join(const std::string& hostname,
                              affiliation, role, this->user_jid, self);
 }
 
-void Bridge::send_topic(const std::string& hostname, const std::string& chan_name, const std::string topic)
+void Bridge::send_topic(const std::string& hostname, const std::string& chan_name, const std::string& topic)
 {
   this->xmpp->send_topic(chan_name + "%" + hostname, this->make_xmpp_body(topic), this->user_jid);
 }

src/bridge/bridge.hpp

@@ -114,7 +114,7 @@ public:
   /**
    * Send the topic of the MUC to the user
    */
-  void send_topic(const std::string& hostname, const std::string& chan_name, const std::string topic);
+  void send_topic(const std::string& hostname, const std::string& chan_name, const std::string& topic);
   /**
    * Send a MUC message from some participant
    */

src/bridge/colors.cpp

@@ -166,10 +166,8 @@ Xmpp::body irc_format_to_xhtmlim(const std::string& s)
     {
       current_node->close();
       result->add_child(current_node);
-      current_node = result.get();
     }
 
-
   result->close();
   Xmpp::body body_res = std::make_tuple(cleaned, std::move(result));
   return body_res;