virutil: fix trailing '/' for path prefixes
virutil: fix trailing '/' for path prefixes

The path prefixes for sysfs trees are always prepended by paths
beginning with a slash, making the trailing slash in the prefix
redundant.

Signed-off-by: Bjoern Walk <40545c009452f40d2ae0bbfbd987b332d274d328@linux.vnet.ibm.com>
Reviewed-by: Marc Hartmayer <7bafc8cd4e6394916d396e4f8cde69753be8d066@linux.vnet.ibm.com>
Reviewed-by: Boris Fiuczynski <2648abdd55bfebf313fd324b464b047e6eea300e@linux.vnet.ibm.com>

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