windows: fetch_iocp_result().unwrap() panic observed (during drop)

[jschwe]

ipc-channel/src/platform/windows/mod.rs

Lines 1534 to 1536 in 2ef0ed7

	// We unwrap the outer result (can't deal with the IOCP call failing here),
	// but don't care about the actual results of the completed read operations.
	let _ = self.fetch_iocp_result().unwrap();

Panic observed in servo CI (unit-tests): https://github.com/servo/servo/actions/runs/19707149516/job/56457642157
I'm not familiar with this code, but do we really need to panic here, or could we just ignore the error?