[PATCH v2 0/2] MR7049: vbscript: fix Mid() empty and null handling

[Francis De Brabandere (＠francisdb)]

Fixes https://bugs.winehq.org/show_bug.cgi?id=57563

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  v2: forgot  test
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/7049