Fix cpplint whitespace/comments issues

Change-Id: Iae286862c85fb8fd8901eae1204cd6d271d69496
diff --git a/compiler/dex/local_value_numbering.h b/compiler/dex/local_value_numbering.h
index e3fd7ad..33ca8f1 100644
--- a/compiler/dex/local_value_numbering.h
+++ b/compiler/dex/local_value_numbering.h
@@ -137,6 +137,6 @@
   std::set<uint16_t> null_checked_;
 };
 
-} // namespace art
+}  // namespace art
 
 #endif  // ART_COMPILER_DEX_LOCAL_VALUE_NUMBERING_H_