[pango] fontmap: fix warnings from recent g_object_ref() changes

[Christian Hergert <chergert src gnome org>]

commit 3ccf578a2d39350d19af12bceaf700cb6b178436
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jan 4 23:11:44 2018 -0800

    fontmap: fix warnings from recent g_object_ref() changes
    
    https://bugzilla.gnome.org/show_bug.cgi?id=792231

 pango/pangofc-fontmap.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/pango/pangofc-fontmap.c b/pango/pangofc-fontmap.c
index 9ed9d95..cc4694d 100644
--- a/pango/pangofc-fontmap.c
+++ b/pango/pangofc-fontmap.c
@@ -1566,7 +1566,7 @@ pango_fc_font_map_new_font (PangoFcFontMap    *fcfontmap,
 
   fcfont = g_hash_table_lookup (priv->font_hash, &key);
   if (fcfont)
-    return g_object_ref (fcfont);
+    return g_object_ref (PANGO_FONT (fcfont));
 
   class = PANGO_FC_FONT_MAP_GET_CLASS (fcfontmap);
 
@@ -1797,7 +1797,7 @@ pango_fc_font_map_load_fontset (PangoFontMap                 *fontmap,
   pango_font_description_free (key.desc);
   g_free (key.variations);
 
-  return g_object_ref (fontset);
+  return g_object_ref (PANGO_FONTSET (fontset));
 }
 
 /**