[Bug 53678] vbscript can not compile CaseClausules that do not use a colon

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53678

--- Comment #4 from Jason Millard  ---
I just ran into another script that uses "Case ELSE" without a colon:

"Case Else vpmKeyUp = False"

Updated CaseClausules as:

CaseClausules
    : /* empty */                          { $$ = NULL; }
    | tCASE tELSE StSep StatementsNl_opt   { $$ = new_case_clausule(ctx, NULL,
$4, NULL); }
    | tCASE tELSE StatementsNl_opt         { $$ = new_case_clausule(ctx, NULL,
$3, NULL); }
    | tCASE ExpressionList StSep StatementsNl_opt CaseClausules
                                           { $$ = new_case_clausule(ctx, $2,
$4, $5); }
    | tCASE ExpressionList StatementsNl_opt CaseClausules
                                           { $$ = new_case_clausule(ctx, $2,
$3, $4); }