exifr readlong wrapper

gistfile1.rb

module EXIFR 
  class TIFF 
    class Data 
      if instance_methods.include?("readshort") 
        def readshort_with_rescue(pos) 
          readshort_without_rescue(pos) rescue nil 
        end 
        alias_method_chain :readshort, :rescue         
      end 
 
      if instance_methods.include?("readshort") 
        def readlong_with_rescue(pos) 
          readlong_without_rescue(pos) rescue nil 
        end 
        alias_method_chain :readlong, :rescue         
      end 
    end 
  end 
end