x-nagasawa

Unpacker#read_array_header and Unpacker#read_map_header return a wrong size.

1

In windows environment with msgpack-1.0.2-x86-mingw32, Unpacker#read_array_header for array16 and Unpacker#read_map_header for map16 return a wrong size. A code to reproduce is following. ``` require 'msgpack' p MessagePack::VERSION unpacker = MessagePack::Unpacker.new()...