message: Fix direction of branches
diff: @@ -135,9 +135,9 @@ function evalInstr(instr: bril.Instruction, env: Env): bril.Ident | null {
  checkArgs(instr, 3);
  let cond = getBool(instr, env, 0);
  if (cond) {
  - return instr.args[0];
  - } else {
  return instr.args[1];
  + } else {
  + return instr.args[2];
  }
  }
  }
  