Add brackets when wrapping 1-line bracketless ifs about prettier

[jlongster]

I think we can make it so if you don't use brackets, it will try to put the single expression on the same line. The formatter always prints brackets across lines so we can't do the style above. I'd say if you want it on the same line don't use brackets.

[wmertens]

I always use if (err) {return err} for these short escape clauses. I like to always have {} for safety.

Maybe the rule can be that if the body is small enough, it can go on the same line?

[adamdonahue]

I think it shouldn't try to put a single line if on one line. Some styles prefer:

if (cond)
    doSomething();

This should probably just be an option.