If server fails init, save any changed or generated settings.

src/Root.cpp

@@ -151,6 +151,7 @@ void cRoot::Start(void)
 		m_MojangAPI.Start(IniFile);  // Mojang API needs to be started before plugins, so that plugins may use it for DB upgrades on server init
 		if (!m_Server->InitServer(IniFile))
 		{
+			IniFile.WriteFile("Settings.ini")
 			LOGERROR("Failure starting server, aborting...");
 			return;
 		}