fix string slicing under 1.9 after short writes

Fortunately this only affects the hardly-used FiberSpawn and
FiberPool concurrency models, and also unreleased revisions of
Rev.  1.9 encoding is tricky to handle right when doing I/O in
Ruby...

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/rainbows.rb b/lib/rainbows.rb
index 906806f..b1ec220 100644
--- a/lib/rainbows.rb
+++ b/lib/rainbows.rb
@@ -122,4 +122,5 @@ module Rainbows
   end
   # :startdoc:
   autoload :Fiber, 'rainbows/fiber' # core class
+  autoload :ByteSlice, 'rainbows/byte_slice'
 end