Fixed crash when requesting configuration from unconfigured recevier.
Fixed crash when requesting configuration from unconfigured recevier.

The request_configuration method now only attempts to call the decoder
request method when a decoder has been configured and the shared pointer
is valid. Thanks to @ajgdls for spotting this. PR reviews are beneficial!

percival-detector/odin-data,odin-detector/odin-data,odin-detector/odin-data,percival-detector/odin-data,odin-detector/odin-data,odin-detector/odin-data,percival-detector/odin-data,percival-detector/odin-data,odin-detector/odin-data,odin-detector/odin-data,percival-detector/odin-data,odin-detector/odin-data,percival-detector/odin-data,percival-detector/odin-data