[PATCH v2 0/1] MR10374: Draft: vbscript: Throw proper error for undefined variables with Option Explicit.

[Francis De Brabandere (＠francisdb)]

When Option Explicit is set and a For loop uses an undefined variable,
throw error 500 (Variable is undefined) with proper description instead
of just returning E_FAIL.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=57511

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  v2: vbscript: Throw proper error for undefined variables with Option Explicit.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/10374