virsh-completer: use VIR_AUTOFREE for char* variables
virsh-completer: use VIR_AUTOFREE for char* variables

Signed-off-by: Ján Tomko <4cab11cfb98d3c937327354a78eb07dbb6ee2bc6@redhat.com>

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