NpgsqlConnection and NpgsqlCommand not call Dispose() immediately

[billsheh]

Hello

Looking at the dotmemory dump statistics, there are a lot NpgsqlConnection and NpgsqlCommand objects in finalized state or waiting for finalization, as suggested, it would be more efficient to call Dispose directly and suppress finalization.

[jonwagner]

Hm. This could be one of two things:

1. We're missing a call to Dispose somewhere. I know I've traced most of this to ensure we're calling Dispose. Could be that the generated interfaces miss a path? Do you have code to reproduce this?
2. We're calling DIspose but NpgsqlXXX isn't suppressing finalization. In that case, I think it should be up to the object whether to suppress finalization and I would punt the issue to them.