qemu: remove memset params array to zero in qemuDomainGetPercpuStats
qemu: remove memset params array to zero in qemuDomainGetPercpuStats

the array params is allocated by VIR_ALLOC_N in
remoteDispatchDomainGetCPUStats. it had been set
to zero. No need to reset it to zero again, and
this reset here is incorrect too, nparams * ncpus
is the array length not the size of params array.

Signed-off-by: Gao feng <7e9c653c8ec3abfdd967a0616fd143ca77e7b405@cn.fujitsu.com>

taget/libvirt,taget/libvirt,jardasgit/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,eskultety/libvirt,shugaoye/libvirt,elmarco/libvirt,crobinso/libvirt,libvirt/libvirt,fabianfreyer/libvirt,agx/libvirt,shugaoye/libvirt,olafhering/libvirt,VenkatDatta/libvirt,rlaager/libvirt,olafhering/libvirt,datto/libvirt,eskultety/libvirt,nertpinx/libvirt,eskultety/libvirt,elmarco/libvirt,nertpinx/libvirt,shugaoye/libvirt,elmarco/libvirt,VenkatDatta/libvirt,jfehlig/libvirt,olafhering/libvirt,taget/libvirt,zippy2/libvirt,datto/libvirt,rlaager/libvirt,taget/libvirt,shugaoye/libvirt,zippy2/libvirt,rlaager/libvirt,VenkatDatta/libvirt,andreabolognani/libvirt,datto/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,eskultety/libvirt,agx/libvirt,libvirt/libvirt,datto/libvirt,crobinso/libvirt,libvirt/libvirt,jardasgit/libvirt,andreabolognani/libvirt,elmarco/libvirt,elmarco/libvirt,crobinso/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,datto/libvirt,taget/libvirt,jfehlig/libvirt,andreabolognani/libvirt,libvirt/libvirt,agx/libvirt,rlaager/libvirt,crobinso/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,VenkatDatta/libvirt,jardasgit/libvirt,agx/libvirt,nertpinx/libvirt,zippy2/libvirt,olafhering/libvirt,nertpinx/libvirt,shugaoye/libvirt,zippy2/libvirt,andreabolognani/libvirt,eskultety/libvirt,agx/libvirt,rlaager/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,jardasgit/libvirt