Fix unescape (#25)

Author: fangherk

lib/protocol/http/url.rb

@@ -33,7 +33,7 @@ def self.escape(string, encoding = string.encoding)
 			# Unescapes a percent encoded string.
 			def self.unescape(string, encoding = string.encoding)
 				string.b.gsub(/%(\h\h)/) do |hex|
-					Integer(hex, 16).chr
+					Integer($1, 16).chr
 				end.force_encoding(encoding)
 			end
 

spec/protocol/http/url_spec.rb

@@ -74,4 +74,10 @@
 			end.to raise_error(/Key length exceeded/)
 		end
 	end
+
+	describe '.unescape' do
+		it "succeds with hex characters" do
+			expect(Protocol::HTTP::URL.unescape("%3A")).to be == ":"
+		end
+	end
 end