[glib] gdbus: Fix memory leak in gdbusmethodinvocation.c

[Philip Withnall <pwithnall src gnome org>]

commit feae4e9f3184e0c59e658652c1b0ec31efe8d8b3
Author: Alexandros Frantzis <alexandros frantzis canonical com>
Date:   Wed Apr 5 14:57:44 2017 +0300

    gdbus: Fix memory leak in gdbusmethodinvocation.c
    
    https://bugzilla.gnome.org/show_bug.cgi?id=780924

 gio/gdbusmethodinvocation.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gio/gdbusmethodinvocation.c b/gio/gdbusmethodinvocation.c
index 30a8f54..e314ec5 100644
--- a/gio/gdbusmethodinvocation.c
+++ b/gio/gdbusmethodinvocation.c
@@ -105,6 +105,8 @@ g_dbus_method_invocation_finalize (GObject *object)
   g_free (invocation->method_name);
   if (invocation->method_info)
       g_dbus_method_info_unref (invocation->method_info);
+  if (invocation->property_info)
+      g_dbus_property_info_unref (invocation->property_info);
   g_object_unref (invocation->connection);
   g_object_unref (invocation->message);
   g_variant_unref (invocation->parameters);