mwan3: fix string check for active_tbls

Signed-off-by: Florian Eckert <fe@dev.tdt.de>

diff --git a/net/mwan3/files/usr/sbin/mwan3rtmon b/net/mwan3/files/usr/sbin/mwan3rtmon
index f916f4a9c33b5292b863293c68faeed0bc295909..96a774783d6f9e257f4357e5798980819b72b1d2 100755 (executable)
--- a/net/mwan3/files/usr/sbin/mwan3rtmon
+++ b/net/mwan3/files/usr/sbin/mwan3rtmon
@@ -56,7 +56,7 @@ mwan3_add_all_routes()
        tid=0
        active_tbls=" "
        config_foreach add_active_tbls interface
-       [ $active_tbls = " " ] && return
+       [ "$active_tbls" = " " ] && return
        mwan3_get_routes | while read -r route_line; do
                mwan3_route_line_dev "tid" "$route_line" "$ipv"
                if [ -n "$tid" ] && [ -z "${active_tbls##* $tid *}" ]; then