libharu：HPDFEncoder#get_byte_type

「rb_define_method(rb_cHPDFEncoder, "get_byte_type", hpdf_encoder_get_byte_type, 1);」を
「rb_define_method(rb_cHPDFEncoder, "get_byte_type", hpdf_encoder_get_byte_type, 2);」に修正

#!/usr/bin/env ruby

require "hpdf"

pdf  = HPDFDoc.new
page = pdf.add_page

p pdf.get_current_encoder.get_byte_type("foo", 0)
font = pdf.get_font("Helvetica", nil)
page.set_font_and_size(font, 20)
p pdf.get_current_encoder.get_byte_type("foo", 0)


pdf.use_jp_fonts
pdf.use_jp_encodings
font = pdf.get_font("MS-Mincyo", "90ms-RKSJ-H")
page.set_font_and_size(font, 20)
p pdf.get_current_encoder.get_byte_type("foo", 0)
p pdf.get_encoder("90ms-RKSJ-H").get_byte_type("foo", 0)
p pdf.get_encoder("EUC-H").get_byte_type("foo", 0)

p [HPDFDoc::HPDF_BYTE_TYPE_SINGLE,
   HPDFDoc::HPDF_BYTE_TYPE_LEAD,
   HPDFDoc::HPDF_BYTE_TYPE_TRIAL]

で、

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