storage: lvm: Avoid forward decl of virStorageBackendLogicalDeleteVol
storage: lvm: Avoid forward decl of virStorageBackendLogicalDeleteVol

Change code ordering to avoid the need for a forward declaration.

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