Fix crash on paste #1173
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Fix crash on paste #1173
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Fixes PowerShell/vscode-powershell#2420.
As @daxian-dbw explained, PSReadLine fires off its ReadKey call on a different thread to be asynchronous. This means the PSReadLine call can return before the ReadKey delegate has been called, leading to a condition where the
finallyblock had set the cancellation token tonullbut ourReadKeydelegate hadn't been run yet.It turns out we don't need to set the cancellation token source to null; it will get reset on the next call anyway.