util: iscsi: use VIR_AUTOFREE instead of VIR_FREE for scalar types
util: iscsi: use VIR_AUTOFREE instead of VIR_FREE for scalar types

Add another usage for VIR_AUTOFREE macro which was left in the
commit ec3e878, thereby dropping a VIR_FREE call and and a cleanup
section.

Signed-off-by: Sukrit Bhatnagar <02d85ae20d84d76725fbb98cf67368d465476907@gmail.com>
Reviewed-by: Erik Skultety <2c14d38fa47c8799f1b9c16280abe27f8edfec6e@redhat.com>

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