modemmanager: add proto dynamic defaults on dhcp setup

Also, explicitly close the JSON object.

Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>

net/modemmanager/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=modemmanager
 PKG_VERSION:=1.10.8
-PKG_RELEASE:=6
+PKG_RELEASE:=7
 
 PKG_SOURCE:=ModemManager-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=https://www.freedesktop.org/software/ModemManager

net/modemmanager/files/modemmanager.proto

@@ -175,7 +175,9 @@ modemmanager_connected_method_dhcp() {
 	json_add_string name "${interface}_4"
 	json_add_string ifname "@${interface}"
 	json_add_string proto "dhcp"
+	proto_add_dynamic_defaults
 	[ -n "$metric" ] && json_add_int metric "${metric}"
+	json_close_object
 	ubus call network add_dynamic "$(json_dump)"
 }