message: Fix test:
  Call instruction was added to builder instead of call_builder. Triggers the assertion in MakeInstructionPostOrder when dumping out the module.
diff: @@ -2127,7 +2127,7 @@ TEST_F(AlgebraicSimplifierTest, IteratorInvalidation) {
  HloInstruction::CreateConstant(Literal::CreateR1<float>({0.0f})));
  HloInstruction* one = call_builder.AddInstruction(
  HloInstruction::CreateConstant(Literal::CreateR1<float>({1.0f})));
  - builder.AddInstruction(
  + call_builder.AddInstruction(
  HloInstruction::CreateCall(r1f32, {zero, one}, dot_computation.get()));
  auto module = CreateNewModule();
  