message: Fix vision range for revealed territory
diff: @@ -491,8 +491,9 @@ class Birth(object):
  if bCanNeighbourReveal:
  revealed += neighbourRevealed
  +
  iVisionRange = self.player.getCurrentEra() / 2 + 1
  - revealed.expand(iVisionRange)
  + revealed = revealed.expand(iVisionRange)
  if bCanPeerReveal:
  revealed += peerRevealed
  