If 'else' is about to happen anyway should it be declared or not?

Possible Duplicate:
Should ‘else’ be kept or dropped in cases where it’s not needed?

When

a = 0

This:

var foo = function() {
  if (a != 0) return true
  return false
}

Or this:

var bar = function() {
  if (a != 0) return true
  else return false
}