RFR: Fix WinPerfAsmProfiler init exception when Utils.tryWith return Collections.singleton

[XIACYBING]

On Mon, 16 May 2022 09:49:09 GMT, XIACYBING <duke at openjdk.java.net> wrote:

> When Windows Performance Toolkit is not installed in Windows environment, WinPerAsmProfiler will start abnormally and throw wrong message due to wrong operation.

@shipilev  Can you please help review this PR?

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PR: https://git.openjdk.java.net/jmh/pull/72