use opt_str_freeze to avoid allocations in a few places

None of these are too performance critical, but err on
the safe side and avoid allocations whenever possible.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/mogilefs/new_file/writer.rb b/lib/mogilefs/new_file/writer.rb
index d58a4e6..e2f13fc 100644
--- a/lib/mogilefs/new_file/writer.rb
+++ b/lib/mogilefs/new_file/writer.rb
@@ -9,7 +9,7 @@ module MogileFS::NewFile::Writer
   def puts(*args)
     args.each do |obj|
       write(obj)
-      write("\n")
+      write("\n".freeze)
     end
     nil
   end