In commit 2d03f27f0f ("openwrt-keyring: make opkg use 22.03 usign
key") I've accidentally removed the `endef` keyword, so fix it by adding
it back.
Fixes: 2d03f27f0f ("openwrt-keyring: make opkg use 22.03 usign key")
Reported-by: Hannu Nyman <hannu.nyman@iki.fi>
Signed-off-by: Petr Štetiar <ynezz@true.cz>