gevent / gevent / 3483

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master: 76%

Pull #1497

travis-ci

Fix potential crashes in the FFI backends if a watcher was closed and stopped in the middle of a callback from the event loop and then raised an exception.

This could happen if the hub's ``handle_error`` function was poorly customized, for example.

Fixes #1482

Direct error handling through the loop in the unexpected-but-closed case as well.

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