an additional null ref check.
an additional null ref check.

AlexGhiondea/Fitbit.NET,AlexGhiondea/Fitbit.NET,aarondcoleman/Fitbit.NET,AlexGhiondea/Fitbit.NET,WestDiscGolf/Fitbit.NET,WestDiscGolf/Fitbit.NET,amammay/Fitbit.NET,aarondcoleman/Fitbit.NET,amammay/Fitbit.NET,amammay/Fitbit.NET,WestDiscGolf/Fitbit.NET,aarondcoleman/Fitbit.NET