Get-PSAutorun -VerifyDigitalSignature throws Illegal characters in path

[p0w3rsh3ll]

Steps to reproduce

Get-PSAutorun -ScheduledTasks -VerifyDigitalSignature
Test-Path : Illegal characters in path.
At AutoRuns.psm1:2621 char:29

# this happens for example if there's a scheduletask value with
# C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe -Exec Bypass -Command "Set-Service -Name AppIDSvc -StartupType Automatic"

Expected behavior

No error thrown

Environment data

> $PSVersionTable
Name                           Value
----                           -----
PSVersion                      5.1.18362.752
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.18362.752
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1