fix ios page (#866)

* fix ios page

* add changelog

Author: KazuCocoa

CHANGELOG.md

@@ -7,6 +7,7 @@ Release tags are https://github.com/appium/ruby_lib/releases .
 ### 1. Enhancements
 
 ### 2. Bug fixes
+- Fix iOS `page` in native context
 
 ### 3. Deprecations
 

lib/appium_lib/ios/common/helper.rb

@@ -21,7 +21,7 @@ class UITestElementsPrinter < Nokogiri::XML::SAX::Document
       def start_element(type, attrs = [])
         return if filter && !filter.eql?(type)
 
-        page = attrs.each_with_object({}) do |hash, attr|
+        page = attrs.each_with_object({}) do |attr, hash|
           hash[attr[0]] = attr[1] if %w(name label value hint visible).include?(attr[0])
           hash
         end