lldpd: fix a paste error

from commit 1be2088a52

The original PR #13018 did not exhibit this.

Tested on 22.03.5

Signed-off-by: Paul Donald <newtwen@gmail.com>
(cherry picked from commit 4fb8fea6de)
Link: https://github.com/openwrt/openwrt/pull/15299
Signed-off-by: Robert Marko <robimarko@gmail.com>

package/network/services/lldpd/files/lldpd.init

@@ -75,7 +75,8 @@ get_config_restart_hash() {
 }
 
 get_config_cid_ifaces() {
-	local _ifacesCONFIG_LLDPD_WITH_FDP
+	local _ifaces
+	config_get _ifaces 'config' 'cid_interface'
 
 	local _iface _ifnames=""
 	for _iface in $_ifaces; do