I say leave it as it is. Using only one set of brackets isn't even what I'd call 'bad' coding, as it's still very clear what you're trying to do.

Code:
if x == y { do this }
if (x == y) do this
if (x == y) { do this }


There's absolutely no ambiguity in any of those statements. In this however:

Code:
if x == y do this


There is.