secnetperf-helper.ps1 suppress stderr

[ami-GS]

Describe the bug

Here just shows exit code. the stderr is not checked and printed.

msquic/scripts/secnetperf-helpers.psm1

Line 351 in 0576776

throw "secnetperf: Nonzero exit code: $($Process.ExitCode)"

Affected OS

• Windows
• Linux
• macOS
• Other (specify below)

Additional OS information

saw on Linux, but should happen on Windows

MsQuic version

main

Steps taken to reproduce bug

netperf action runner

Expected behavior

output stderr when something wrong.

Actual outcome

just showing exit code

Additional details

No response

[nibanks]

@ProjectsByJackHe please take a look at this. Make a fix if necessary, otherwise close the issue.