[PATCH v2 0/1] MR2142: vbscript: fix compile when colon follows Else on new line

[Jason Millard (＠jsm174)]

I ran into a script where someone placed a `:` on a new line after an `Else` but before another statement:

```
                Else
 :                      VelCoef = LinearEnvelope(BallPos, VelocityIn, VelocityOut)
                        if Enabled then aBall.Velx = aBall.Velx*VelCoef
                        if Enabled then aBall.Vely = aBall.Vely*VelCoef
                end if
```

I confirmed that this is allowed and works.

I've updated the grammar, and replaced `NL` with `StSep_opt` as it seems to cover all the bases.

Fixes: https://bugs.winehq.org/show_bug.cgi?id=54234

--
  v2: vbscript: fix compile when colon follows Else on new line

https://gitlab.winehq.org/wine/wine/-/merge_requests/2142