ART: Refactor for bugprone-argument-comment

Handles compiler.

Bug: 116054210
Test: WITH_TIDY=1 mmma art
Change-Id: I5cdfe73c31ac39144838a2736146b71de037425e
diff --git a/compiler/optimizing/dead_code_elimination_test.cc b/compiler/optimizing/dead_code_elimination_test.cc
index 2774535..f5cd4dc 100644
--- a/compiler/optimizing/dead_code_elimination_test.cc
+++ b/compiler/optimizing/dead_code_elimination_test.cc
@@ -43,7 +43,7 @@
   std::string actual_before = printer_before.str();
   ASSERT_EQ(actual_before, expected_before);
 
-  HDeadCodeElimination(graph, nullptr /* stats */, "dead_code_elimination").Run();
+  HDeadCodeElimination(graph, /* stats= */ nullptr, "dead_code_elimination").Run();
   GraphChecker graph_checker(graph);
   graph_checker.Run();
   ASSERT_TRUE(graph_checker.IsValid());