Fix cpplint whitespace/comments issues

Change-Id: Iae286862c85fb8fd8901eae1204cd6d271d69496
diff --git a/compiler/llvm/runtime_support_builder.cc b/compiler/llvm/runtime_support_builder.cc
index e6479e0..7299803 100644
--- a/compiler/llvm/runtime_support_builder.cc
+++ b/compiler/llvm/runtime_support_builder.cc
@@ -276,5 +276,5 @@
 }
 
 
-} // namespace llvm
-} // namespace art
+}  // namespace llvm
+}  // namespace art