Fixed bug: odd devices would fail Root GetFeature

Some devices throw an hidpp20::Error InvalidFeatureIndex when Root
GetFeature is called with some features (e.g. 0x1b04) as the parameter.

Since Root is a required feature in the HID++ 2.0 protocol, this error
can safely be ignored and treated as an UnsupportedFeature.

Fixes bug in #20 where the Logitech PRO headset would not work.

src/logid/backend/hidpp/Device.cpp

@@ -174,7 +174,7 @@ Report Device::sendReport(Report& report)
 
     Report::Hidpp20Error hidpp20_error{};
     if(response.isError20(&hidpp20_error))
-        throw hidpp10::Error(hidpp20_error.error_code);
+        throw hidpp20::Error(hidpp20_error.error_code);
 
     return response;
 }