DataFrame VBufferDataFrameColumn fails if element is set to Null

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Open asmirnov82 opened 9 months ago

asmirnov82 commented 9 months ago

Describe the bug

Code to reproduce:

DataFrameColumn vBufferColumn = new VBufferDataFrameColumn<int>("VBuffer", 1);
vBufferColumn[0] = null;

Fails with System.NullReferenceException: 'Object reference not set to an instance of an object.'