virNetDevBandwidthUnplug: Don't leak @cmd
virNetDevBandwidthUnplug: Don't leak @cmd

When removing a TAP device, the associated bandwidth settings are
removed. Currently, the /sbin/tc is used for that. It is spawned
several times. Moreover, we use the same @cmd variable to
construct the command and its arguments. That means we need to
virCommandFree(cmd); prior to each virCommandNew(TC); which
wasn't done.

jardasgit/libvirt,zippy2/libvirt,jardasgit/libvirt,datto/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,VenkatDatta/libvirt,olafhering/libvirt,shugaoye/libvirt,nertpinx/libvirt,crobinso/libvirt,agx/libvirt,zhlcindy/libvirt-1.1.4-maintain,olafhering/libvirt,nertpinx/libvirt,zippy2/libvirt,rlaager/libvirt,fabianfreyer/libvirt,eskultety/libvirt,shugaoye/libvirt,libvirt/libvirt,eskultety/libvirt,jardasgit/libvirt,olafhering/libvirt,elmarco/libvirt,rlaager/libvirt,andreabolognani/libvirt,nertpinx/libvirt,cbosdo/libvirt,cbosdo/libvirt,andreabolognani/libvirt,shugaoye/libvirt,taget/libvirt,elmarco/libvirt,taget/libvirt,VenkatDatta/libvirt,zhlcindy/libvirt-1.1.4-maintain,nertpinx/libvirt,zhlcindy/libvirt-1.1.4-maintain,cbosdo/libvirt,cbosdo/libvirt,fabianfreyer/libvirt,shugaoye/libvirt,rlaager/libvirt,agx/libvirt,libvirt/libvirt,eskultety/libvirt,agx/libvirt,taget/libvirt,libvirt/libvirt,jfehlig/libvirt,olafhering/libvirt,rlaager/libvirt,taget/libvirt,taget/libvirt,zippy2/libvirt,jfehlig/libvirt,libvirt/libvirt,datto/libvirt,elmarco/libvirt,andreabolognani/libvirt,datto/libvirt,VenkatDatta/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,agx/libvirt,elmarco/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt,crobinso/libvirt,cbosdo/libvirt,crobinso/libvirt,zhlcindy/libvirt-1.1.4-maintain,crobinso/libvirt,agx/libvirt,zippy2/libvirt,jfehlig/libvirt,eskultety/libvirt,datto/libvirt,jardasgit/libvirt,VenkatDatta/libvirt,nertpinx/libvirt,shugaoye/libvirt,eskultety/libvirt,rlaager/libvirt,datto/libvirt,elmarco/libvirt,jardasgit/libvirt,zhlcindy/libvirt-1.1.4-maintain