Fix cpplint whitespace/comments issues

Change-Id: Iae286862c85fb8fd8901eae1204cd6d271d69496
diff --git a/dalvikvm/dalvikvm.cc b/dalvikvm/dalvikvm.cc
index 1672099..4607f9a 100644
--- a/dalvikvm/dalvikvm.cc
+++ b/dalvikvm/dalvikvm.cc
@@ -205,7 +205,7 @@
   return rc;
 }
 
-} // namespace art
+}  // namespace art
 
 int main(int argc, char** argv) {
   return art::dalvikvm(argc, argv);