generic: fix broken patch in the transition of 3.19 from -rc5 to release .0

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@44416 3c298f89-4303-0410-b956-a3cf2f4a3e73