put original message in edit dialog

abaddon.cpp

@@ -395,7 +395,9 @@ void Abaddon::ActionChatDeleteMessage(Snowflake channel_id, Snowflake id) {
 }
 
 void Abaddon::ActionChatEditMessage(Snowflake channel_id, Snowflake id) {
+    const auto *msg = m_discord.GetMessage(id);
     EditMessageDialog dlg(*m_main_window);
+    dlg.SetContent(msg->Content);
     auto response = dlg.run();
     if (response == Gtk::RESPONSE_OK) {
         auto new_content = dlg.GetContent();