[LLC]: Fix sap refcounting

Thanks to Leslie Harlley Watter <leslie@watter.org> for reporting the
problem an testing this patch.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc net/llc/af_llc.c
Simple merge

diff --cc net/llc/llc_core.c
Simple merge