storage: Use VIR_STEAL_PTR in storageBackendProbeTarget
storage: Use VIR_STEAL_PTR in storageBackendProbeTarget

Signed-off-by: John Ferlan <87558058f6f829e5ec976c8ef960720af4ff9c7d@redhat.com>
Reviewed-by: Erik Skultety <2c14d38fa47c8799f1b9c16280abe27f8edfec6e@redhat.com>
Reviewed-by: Ján Tomko <4cab11cfb98d3c937327354a78eb07dbb6ee2bc6@redhat.com>

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