Missing null check in Dispose() method

[zukrac]

this place has null check "if (_disposables == null) return;"
Kadinche.Kassets.Subscription[T].Dispose()

another place needs the same:
Kadinche.Kassets.Subscription.Dispose()

in file: /Runtime/Utility/Subscription.cs

[ripandy]

Hello, zukrac!
Thank you for pointing out the issue!
I'll try to take a look at it when I got the time.