neat_close: fix use after free

NEAT-project / neat

A New, Evolutive API and Transport-Layer Architecture for the Internet

https://www.neat-project.org/

BSD 3-Clause "New" or "Revised" License

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Closed bagder closed 7 years ago

bagder commented 7 years ago

After neat_close_socket(), the flow is freed and must not be used further. And it already calls notift_socket() itself.

Coverity CID 1452611.