modemmanager: fix bearer disconnection logic

The bearer status wasn't being loaded in key/value mode, and therefore
would always fail to load the IPv4 config method.

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:=3
+PKG_RELEASE:=4
 
 PKG_SOURCE:=ModemManager-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=https://www.freedesktop.org/software/ModemManager

net/modemmanager/files/modemmanager.proto

@@ -375,7 +375,7 @@ proto_modemmanager_teardown() {
 	}
 
 	# load bearer connection method
-	bearerstatus=$(mmcli --bearer "${bearerpath}")
+	bearerstatus=$(mmcli --bearer "${bearerpath}" --output-keyvalue)
 	bearermethod=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv4-config.method")
 	[ -n "${bearermethod}" ] || {
 		echo "couldn't load bearer method"