linux_kernel: don't forget to close fd
linux_kernel: don't forget to close fd

Signed-off-by: Andrey Vagin <74c05afa918858348d6db8037d82fa8124870113@openvz.org>

hallyn/libct,avagin/libct,xemul/libct,LK4D4/libct,xemul/libct,xemul/libct,LK4D4/libct,avagin/libct,hallyn/libct,avagin/libct,xemul/libct,hallyn/libct,LK4D4/libct