[Bug 56139] New: vbscript: Dictionary does not allow storing Undefined

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=56139

Bug ID: 56139
           Summary: vbscript: Dictionary does not allow storing Undefined
           Product: Wine
           Version: 8.21
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: vbscript
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Example code below, min the commented KEY1 const

Dim pinEvents
Set pinEvents = CreateObject("Scripting.Dictionary")
'Const KEY1 = "one"
pinEvents.Add KEY1, "hello"
WScript.Echo pinEvents(KEY1)
WScript.Echo pinEvents(Undefined)

Prints on windows

[Running] cscript //Nologo "test.vbs"
hello
hello

[Done] exited with code=0 in 0.057 seconds

On Linux we get no output

wine cscript ./test.vbs

This is because the code ends up in a FIXME section at
https://gitlab.winehq.org/wine/wine/-/blob/master/dlls/scrrun/dictionary.c#L...