Previously if array.Concatenate returned an error not all columns in the cols slice would be populated and would cause the deferred function to panic on Release.
This fixes that potential panic by appending to the cols array such that only the allocated columns are released.
Previously if array.Concatenate returned an error not all columns in the cols slice would be populated and would cause the deferred function to panic on Release.
This fixes that potential panic by appending to the cols array such that only the allocated columns are released.