[Bug 44338] cmd: Brackets are no deliminiter in the condition part of the if command.

https://bugs.winehq.org/show_bug.cgi?id=44338

--- Comment #8 from Jason Edmeades  ---
For what its worth I think this patch takes the parsing in the right direction.
I'm working on 'if' parsing and handling at the moment (I have a set of
patches) but to solve some of the more complex problems I need to know where
the condition ends, which your patch provides. Hopefully AJ will indicate if
there's a problem or not, otherwise its worth asking (he's away at the moment)