libct: cgroups -- Fix potential null derefs in local_config_controller
libct: cgroups -- Fix potential null derefs in local_config_controller

Signed-off-by: Cyrill Gorcunov <7a1ea01eee6961eb1e372e3508c2670446d086f4@openvz.org>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@parallels.com>

cyrillos/xemul-libct,hallyn/libct,xemul/libct,avagin/libct,xemul/libct,hallyn/libct,cyrillos/xemul-libct,xemul/libct,LK4D4/libct,LK4D4/libct,avagin/libct,cyrillos/xemul-libct,avagin/libct,cyrillos/xemul-libct,xemul/libct,hallyn/libct,LK4D4/libct