TS-4410 : Fixed compiler warning on i386 builds
TS-4410 : Fixed compiler warning on i386 builds

This is for unsigned-vs-signed int comparison.

This closes #611

persiaAziz/trafficserver,bryancall/trafficserver,clearswift/trafficserver,rpufky/trafficserver,SolidWallOfCode/trafficserver,pbchou/trafficserver,chenglongwei/trafficserver,rpufky/trafficserver,chitianhao/trafficserver,rpufky/trafficserver,chitianhao/trafficserver,davidbz/trafficserver,reveller/trafficserver,reveller/trafficserver,chenglongwei/trafficserver,taoyunxing/trafficserver,persiaAziz/trafficserver,rahmalik/trafficserver,rpufky/trafficserver,PSUdaemon/trafficserver,persiaAziz/trafficserver,clearswift/trafficserver,rahmalik/trafficserver,chenglongwei/trafficserver,PSUdaemon/trafficserver,vmamidi/trafficserver,pbchou/trafficserver,PSUdaemon/trafficserver,SolidWallOfCode/trafficserver,vmamidi/trafficserver,duke8253/trafficserver,taoyunxing/trafficserver,taoyunxing/trafficserver,vmamidi/trafficserver,dyrock/trafficserver,SolidWallOfCode/trafficserver,davidbz/trafficserver,chitianhao/trafficserver,SolidWallOfCode/trafficserver,bryancall/trafficserver,dyrock/trafficserver,davidbz/trafficserver,chitianhao/trafficserver,PSUdaemon/trafficserver,reveller/trafficserver,chenglongwei/trafficserver,rahmalik/trafficserver,PSUdaemon/trafficserver,SolidWallOfCode/trafficserver,PSUdaemon/trafficserver,clearswift/trafficserver,dyrock/trafficserver,duke8253/trafficserver,rpufky/trafficserver,taoyunxing/trafficserver,persiaAziz/trafficserver,duke8253/trafficserver,taoyunxing/trafficserver,davidbz/trafficserver,chitianhao/trafficserver,clearswift/trafficserver,clearswift/trafficserver,persiaAziz/trafficserver,pbchou/trafficserver,vmamidi/trafficserver,chenglongwei/trafficserver,rpufky/trafficserver,rahmalik/trafficserver,rahmalik/trafficserver,reveller/trafficserver,clearswift/trafficserver,bryancall/trafficserver,taoyunxing/trafficserver,clearswift/trafficserver,duke8253/trafficserver,persiaAziz/trafficserver,PSUdaemon/trafficserver,chenglongwei/trafficserver,dyrock/trafficserver,pbchou/trafficserver,vmamidi/trafficserver,duke8253/trafficserver,davidbz/trafficserver,chenglongwei/trafficserver,reveller/trafficserver,duke8253/trafficserver,rahmalik/trafficserver,bryancall/trafficserver,chenglongwei/trafficserver,vmamidi/trafficserver,pbchou/trafficserver,rahmalik/trafficserver,SolidWallOfCode/trafficserver,persiaAziz/trafficserver,duke8253/trafficserver,dyrock/trafficserver,dyrock/trafficserver,taoyunxing/trafficserver,chitianhao/trafficserver,reveller/trafficserver,reveller/trafficserver,SolidWallOfCode/trafficserver,taoyunxing/trafficserver,clearswift/trafficserver,rahmalik/trafficserver,rpufky/trafficserver,clearswift/trafficserver,rpufky/trafficserver,chitianhao/trafficserver,dyrock/trafficserver,reveller/trafficserver,reveller/trafficserver,pbchou/trafficserver,davidbz/trafficserver,rahmalik/trafficserver,rpufky/trafficserver,PSUdaemon/trafficserver,bryancall/trafficserver,persiaAziz/trafficserver,bryancall/trafficserver,PSUdaemon/trafficserver,taoyunxing/trafficserver