[geary/wip/fix-gmime-abstract-ctors] Fix another GMime custom binding abstract ctors

[Michael Gratton <mjog src gnome org>]

commit 6af84001f22700c419227d9188b27290243c8e1a
Author: Michael Gratton <mike vee net>
Date:   Wed Jul 17 18:28:38 2019 +1000

    Fix another GMime custom binding abstract ctors
    
    Silences compiler warnings produced by current vala head

 bindings/vapi/gmime-2.6.vapi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/bindings/vapi/gmime-2.6.vapi b/bindings/vapi/gmime-2.6.vapi
index c5d1c0aa..2c4ad52a 100644
--- a/bindings/vapi/gmime-2.6.vapi
+++ b/bindings/vapi/gmime-2.6.vapi
@@ -722,7 +722,7 @@ namespace GMime {
                [CCode (cname = "g_mime_object_to_string")]
                public string to_string ();
                [CCode (cname = "g_mime_object_new_type", has_construct_function = false)]
-               public Object.type (string type, string subtype);
+               protected Object.type (string type, string subtype);
                [CCode (cname = "g_mime_object_type_registry_init")]
                public static void type_registry_init ();
                [CCode (cname = "g_mime_object_type_registry_shutdown")]