virConfWalk: fix the inconsistent name
virConfWalk: fix the inconsistent name

Fix inconsistency between function description and actual
parameter name.

Signed-off-by: Cao jin <c5578ac32227d61001c24bf78fc872e2c1452ac3@cn.fujitsu.com>

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