fix(pg-cloudflare): safely end closed sockets - #3735
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Closes #3689.
CloudflareSocket._addClosedHandler()clears_cfSocketwhen the underlying socket closes. A later pool cleanup callsend()/destroy(), which currently dereferences the cleared socket and throws.Use optional chaining so closing an already-closed socket is a no-op. The regression test drives the close handler, verifies the internal socket has been cleared, and confirms
end()no longer throws.Validation:
node --test --conditions=workerd packages/pg-esm-test/pg-cloudflare.test.jsyarn eslint packages/pg-cloudflare/src/index.ts packages/pg-esm-test/pg-cloudflare.test.jsyarn buildgit diff --check