[gtksourceview] Use g_mapped_file_unref in place of deprecated g_mapped_file_free.

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 439057fcb98a2f872dbbfab747d4188a86855950
Author: Michael Callahan <coder callahan gmail com>
Date:   Sat Nov 28 10:28:35 2009 -0700

    Use g_mapped_file_unref in place of deprecated g_mapped_file_free.

 gtksourceview/gtksourcelanguage-parser-1.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/gtksourceview/gtksourcelanguage-parser-1.c b/gtksourceview/gtksourcelanguage-parser-1.c
index 92ee019..15dab3f 100644
--- a/gtksourceview/gtksourcelanguage-parser-1.c
+++ b/gtksourceview/gtksourcelanguage-parser-1.c
@@ -694,8 +694,11 @@ _gtk_source_language_file_parse_version1 (GtkSourceLanguage    *language,
 	{
 		doc = xmlParseMemory (g_mapped_file_get_contents (mf),
 				      g_mapped_file_get_length (mf));
-
+#if GLIB_CHECK_VERSION(2,22,0)
+		g_mapped_file_unref (mf);
+#else
 		g_mapped_file_free (mf);
+#endif
 	}
 
 	if (doc == NULL)