message: add missing parens in the definition of kMinPassAliveMoves
diff: @@ -34,7 +34,7 @@ constexpr int kNumMoves = kN * kN + 1;
  // The best positions we've found for these are:
  // 141 for 19x19, 40 for 9x9
  // but there may be more optimal sequences of moves.
  -constexpr int kMinPassAliveMoves = kN * (kN + 2 / 3);
  +constexpr int kMinPassAliveMoves = kN * ((kN + 2) / 3);
  // 722 moves for 19x19, 162 for 9x9.
  constexpr int kMaxSearchDepth = static_cast<int>(kN * kN * 2);
  