Make sure we don't pass NULL sbuf to sbuf_get in pkg_vget.
Make sure we don't pass NULL sbuf to sbuf_get in pkg_vget.

junovitch/pkg,en90/pkg,en90/pkg,Open343/pkg,khorben/pkg,junovitch/pkg,skoef/pkg,khorben/pkg,Open343/pkg,skoef/pkg,khorben/pkg