ipvs: stop tot_stats estimator only under CONFIG_SYSCTL
ipvs: stop tot_stats estimator only under CONFIG_SYSCTL

The tot_stats estimator is started only when CONFIG_SYSCTL
is defined. But it is stopped without checking CONFIG_SYSCTL.
Fix the crash by moving ip_vs_stop_estimator into
ip_vs_control_net_cleanup_sysctl.

The change is needed after commit 14e405461e664b
("IPVS: Add __ip_vs_control_{init,cleanup}_sysctl()") from 2.6.39.

Reported-by: Jet Chen <414f333f45b7133fb7d587bc46b0ff586a095ba8@intel.com>
Tested-by: Jet Chen <414f333f45b7133fb7d587bc46b0ff586a095ba8@intel.com>
Signed-off-by: Julian Anastasov <84572ef2253ef81e2d8cd8c65849f4d9a3881f47@ssi.bg>
Signed-off-by: Simon Horman <a105fd58f578dea0be108941d4c59d15396e1855@verge.net.au>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs