afm-util: fix incorrect DBUS_SESSION_BUS_ADDRESS syntax

The previous ":=" syntax would not work with "/bin/sh" or
"/bin/bash". Make sure we export it, too.

Signed-off-by: Manuel Bachmann <mbc@iot.bzh>

diff --git a/scripts/afm-util b/scripts/afm-util
index cc7ab55..60434a7 100755 (executable)
--- a/scripts/afm-util
+++ b/scripts/afm-util
@@ -1,8 +1,9 @@
 #!/bin/sh
 
 if [ "x" = "x${DBUS_SESSION_BUS_ADDRESS}" ]; then
-       DBUS_SESSION_BUS_ADDRESS:=unix:path=/run/user/$UID/bus
+       DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/$UID/bus"
 fi
+export DBUS_SESSION_BUS_ADDRESS
 
 pretty() {
        sed \