Coverity issues in HostDB.cc
Coverity issues in HostDB.cc

Fixes Coverity issues:

      CID 1022118
      CID 1022119
      CID 1258629

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