qemu: Add missing encinfo cleanup
qemu: Add missing encinfo cleanup

When commit id 'da86c6c22' added support for diskPriv->encinfo in
qemuDomainSecretDiskPrepare a change to qemuDomainSecretDiskDestroy
to was missed. Although qemuDomainDiskPrivateDispose probably would
do the trick.

Signed-off-by: John Ferlan <87558058f6f829e5ec976c8ef960720af4ff9c7d@redhat.com>

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