ndr_spoolss_buf: fix out of scope use of stack variable in NDR_SPOOLSS_PUSH_ENUM_OUT()

ndr_spoolss_buf: fix out of scope use of stack variable in NDR_SPOOLSS_PUSH_ENUM_OUT()

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13818

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Björn Jacke <bjacke@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
(cherry picked from commit 6da3664f8a11397fd3fb38e89c2432b8bf321e59)