hostapd: fix superflous coma

this cause the wps trigegr to be copied to the wrong place

https://dev.openwrt.org/ticket/13753

Signed-off-by: John Crispin <blogic@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@37031 3c298f89-4303-0410-b956-a3cf2f4a3e73