Enable compatibility with older versions of libconfig (such as the one shipped with RHEL/CentOS 7)

src/logid/actions/ChangeHostAction.cpp

@@ -62,7 +62,7 @@ ChangeHostAction::Config::Config(Device *device, libconfig::Setting& config)
     : Action::Config(device)
 {
     try {
-        auto& host = config.lookup("host");
+        auto& host = config["host"];
         if(host.getType() == libconfig::Setting::TypeInt) {
             _offset = false;
             _host = host;
@@ -116,4 +116,4 @@ uint8_t ChangeHostAction::Config::nextHost(hidpp20::ChangeHost::HostInfo info)
         } else
             return _host;
     }
-}
+}