[PATCH usteer 4/5] openwrt: keep the default event log types

[Patrick Hein]

The init script always passes event_log_types, as an empty list if the
option is not set. usteer then logs no events at all, and the defaults
derived from debug_level (e.g. kicks at the info level) never apply.

Like the other option helpers, leave out lists that are not set.
ssid_list and aggressiveness_mac_list do not change: usteer treats a
missing and an empty list the same.

Fixes: dc383d43610c ("openwrt: add missing config handling for event log types")
Signed-off-by: Patrick Hein <bagbag98 at googlemail.com>
---
 openwrt/usteer/files/etc/init.d/usteer | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/openwrt/usteer/files/etc/init.d/usteer b/openwrt/usteer/files/etc/init.d/usteer
index 5c99bec..a76230b 100755
--- a/openwrt/usteer/files/etc/init.d/usteer
+++ b/openwrt/usteer/files/etc/init.d/usteer
@@ -28,6 +28,10 @@ _add_string() {
 uci_option_to_json_string_array() {
 	local cfg="$1"
 	local option="$2"
+	local len
+
+	config_get len "$cfg" "${option}_LENGTH" 0
+	[ "$len" -gt 0 ] || return 0
 
 	json_add_array "$option"
 	config_list_foreach "$cfg" "$option" _add_string
-- 
2.56.0