Fix cpplint whitespace/comments issues

Change-Id: Iae286862c85fb8fd8901eae1204cd6d271d69496
diff --git a/oatdump/oatdump.cc b/oatdump/oatdump.cc
index 85eb89b..0a34686 100644
--- a/oatdump/oatdump.cc
+++ b/oatdump/oatdump.cc
@@ -1473,7 +1473,7 @@
   return EXIT_SUCCESS;
 }
 
-} // namespace art
+}  // namespace art
 
 int main(int argc, char** argv) {
   return art::oatdump(argc, argv);