Fix cpplint whitespace/comments issues

Change-Id: Iae286862c85fb8fd8901eae1204cd6d271d69496
diff --git a/compiler/llvm/runtime_support_builder_arm.cc b/compiler/llvm/runtime_support_builder_arm.cc
index 5a9d2b8..569d825 100644
--- a/compiler/llvm/runtime_support_builder_arm.cc
+++ b/compiler/llvm/runtime_support_builder_arm.cc
@@ -52,7 +52,7 @@
   }
 }
 
-} // namespace
+}  // namespace
 
 namespace art {
 namespace llvm {
@@ -135,5 +135,5 @@
   irb_.CreateCall(func);
 }
 
-} // namespace llvm
-} // namespace art
+}  // namespace llvm
+}  // namespace art