fix sysupgrade on overlayfs v23+

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>

SVN-Revision: 43365
This commit is contained in:
Imre Kaloz 2014-11-24 15:55:52 +00:00
parent cf0c966d9a
commit 2e3b84c3b5