Remove StringIO usage in HeaderOut

It's more GC-friendly to just use an array than to repeatedly
append short strings on top of each other.  I also find StringIO
confusing...

1 files changed, 2 insertions, 4 deletions

diff --git a/lib/unicorn/http_response.rb b/lib/unicorn/http_response.rb
index 5fbc990..c3094cf 100644
--- a/lib/unicorn/http_response.rb
+++ b/lib/unicorn/http_response.rb
@@ -77,8 +77,7 @@ module Unicorn
         raise "You have already sent the request headers."
       else
         # XXX Dubious ( http://mongrel.rubyforge.org/ticket/19 )
-        @header.out.close
-        @header = HeaderOut.new(StringIO.new) 
+        @header.reset!
 
         @body.close
         @body = StringIO.new
@@ -95,8 +94,7 @@ module Unicorn
 
     def send_header
       if not @header_sent
-        @header.out.rewind
-        write(@header.out.read + Const::LINE_END)
+        write("#{@header.to_s}#{Const::LINE_END}")
         @header_sent = true
       end
     end