[pango/more-introspection-fixes] Add a boxed type for PangoOTBuffer

[Emmanuele Bassi <ebassi src gnome org>]

commit 1cd573cbef97317a63920c22473f07184aa5a405
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Fri Aug 2 14:41:40 2019 +0100

    Add a boxed type for PangoOTBuffer
    
    It's a deprecated type for a deprecated API, but without a GType the
    introspection scanner doesn't know how to resolve the transfer rules
    for a pointer to it.

 pango/pango-ot-buffer.c | 17 +++++++++++++++++
 pango/pango-ot.h        |  2 ++
 2 files changed, 19 insertions(+)
---
diff --git a/pango/pango-ot-buffer.c b/pango/pango-ot-buffer.c
index 334df746..87808e32 100644
--- a/pango/pango-ot-buffer.c
+++ b/pango/pango-ot-buffer.c
@@ -23,6 +23,13 @@
 
 #include "pango-ot-private.h"
 
+static PangoOTBuffer *  pango_ot_buffer_copy    (PangoOTBuffer *buffer);
+
+G_DEFINE_BOXED_TYPE (PangoOTBuffer,
+                     pango_ot_buffer,
+                     pango_ot_buffer_copy,
+                     pango_ot_buffer_destroy)
+
 /**
  * pango_ot_buffer_new
  * @font: a #PangoFcFont
@@ -44,6 +51,16 @@ pango_ot_buffer_new (PangoFcFont *font)
   return buffer;
 }
 
+static PangoOTBuffer *
+pango_ot_buffer_copy (PangoOTBuffer *buffer)
+{
+  PangoOTBuffer *res = g_slice_dup (PangoOTBuffer, buffer);
+
+  res->buffer = hb_buffer_reference (buffer->buffer);
+
+  return res;
+}
+
 /**
  * pango_ot_buffer_destroy
  * @buffer: a #PangoOTBuffer
diff --git a/pango/pango-ot.h b/pango/pango-ot.h
index 501ca8b6..98563096 100644
--- a/pango/pango-ot.h
+++ b/pango/pango-ot.h
@@ -247,6 +247,8 @@ struct _PangoOTRulesetDescription {
   guint                   n_other_features;
 };
 
+PANGO_DEPRECATED
+GType pango_ot_buffer_get_type (void) G_GNUC_CONST;
 
 #define PANGO_TYPE_OT_INFO              (pango_ot_info_get_type ())
 #define PANGO_OT_INFO(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OT_INFO, 
PangoOTInfo))