Add some safety when reading json objects.
Add some safety when reading json objects.

TurboGit/hubicfuse,TurboGit/hubicfuse,toddfries/hubicfuse,dan-cristian/fasthubicfuse,dan-cristian/hubicfuse,dan-cristian/fasthubicfuse,dan-cristian/hubicfuse,toddfries/hubicfuse