[gegl] fix deprecations: s/gexiv2_metadata_free/g_object_unref/

[Øyvind Kolås <ok src gnome org>]

commit d11001cc5cc72d1ba2e68d487c521280fc0b2a3b
Author: Øyvind Kolås <pippin gimp org>
Date:   Fri Dec 16 14:39:35 2016 +0100

    fix deprecations: s/gexiv2_metadata_free/g_object_unref/

 bin/ui.c              |    6 +++---
 examples/gegl-video.c |    4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/bin/ui.c b/bin/ui.c
index 17cc556..1eb0c69 100644
--- a/bin/ui.c
+++ b/bin/ui.c
@@ -2036,7 +2036,7 @@ gegl_meta_set (const char *path,
     if (error)
       g_warning ("%s", error->message);
   }
-  gexiv2_metadata_free (e2m);
+  g_object_unref (e2m);
 }
 
 char *
@@ -2050,7 +2050,7 @@ gegl_meta_get (const char *path)
     ret = gexiv2_metadata_get_tag_string (e2m, "Xmp.xmp.GEGL");
   /*else
     g_warning ("%s", error->message);*/
-  gexiv2_metadata_free (e2m);
+  g_object_unref (e2m);
   return ret;
 }
 
@@ -2064,7 +2064,7 @@ GExiv2Orientation path_get_orientation (const char *path)
     ret = gexiv2_metadata_get_orientation (e2m);
   /*else
     g_warning ("%s", error->message);*/
-  gexiv2_metadata_free (e2m);
+  g_object_unref (e2m);
   return ret;
 }
 
diff --git a/examples/gegl-video.c b/examples/gegl-video.c
index 8a9170b..8d1162f 100644
--- a/examples/gegl-video.c
+++ b/examples/gegl-video.c
@@ -272,7 +272,7 @@ gegl_meta_set_audio (const char        *path,
       g_warning ("%s", error->message);
     g_string_free (str, TRUE);
   }
-  gexiv2_metadata_free (e2m);
+  g_object_unref (e2m);
 }
 
 void
@@ -291,5 +291,5 @@ gegl_meta_get_audio (const char        *path,
   }
   else
     g_warning ("%s", error->message);
-  gexiv2_metadata_free (e2m);
+  g_object_unref (e2m);
 }