generator: fix signed comparison for gcc
generator: fix signed comparison for gcc

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