Unable to get mode for Ruby 1.9

[davispuh]

irb(main):002:0> Net::NTP.get.mode NoMethodError: undefined method &' for "\x1C":String
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/net-ntp-2.1.1/lib/net/ntp/ntp.r
b:120:in mode' from (irb):2 from C:/Ruby193/bin/irb:12:in

'
irb(main):003:0>`

btw it's not only place where I get such error, basically everywhere where's used

fast fix I could think of would be @mode ||= (packet_data_by_field[:byte1][0].getbyte(0) & 0x07)

and btw it's not only place where I get such error, also for version_number and leap_indicator

[marcbowes]

My commit should fix this issue on 1.8, 1.9, 2.0 and 2.1. I've tested with rbenv on my machine.