Revert "Revert "Make clang the default compiler on host.""

This reverts commit d54f3a6219bca6ae018f4395fa0f1254bd4459be.

Change-Id: Id96bb52a0d599f8848010d1589bdf0f70fc7124b
diff --git a/compiler/dex/verification_results.cc b/compiler/dex/verification_results.cc
index 6b0875c..a7f67e7 100644
--- a/compiler/dex/verification_results.cc
+++ b/compiler/dex/verification_results.cc
@@ -30,11 +30,11 @@
 namespace art {
 
 VerificationResults::VerificationResults(const CompilerOptions* compiler_options)
-    : compiler_options_(compiler_options),
-      verified_methods_lock_("compiler verified methods lock"),
+    : verified_methods_lock_("compiler verified methods lock"),
       verified_methods_(),
       rejected_classes_lock_("compiler rejected classes lock"),
       rejected_classes_() {
+  UNUSED(compiler_options);
 }
 
 VerificationResults::~VerificationResults() {