[evince] [build] Fix build with glib < 2.22.0

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 03a19fb7894f544243abcf916eebc628f8e780b2
Author: Christian Spurk <mail code chriki de>
Date:   Sun Nov 1 19:59:28 2009 +0100

    [build] Fix build with glib < 2.22.0
    
    Fixes bgo#600338.

 shell/ev-metadata.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/shell/ev-metadata.c b/shell/ev-metadata.c
index a8fde31..4db4a00 100644
--- a/shell/ev-metadata.c
+++ b/shell/ev-metadata.c
@@ -89,11 +89,13 @@ ev_metadata_load (EvMetadata *metadata)
 		return;
 	}
 
+#if GLIB_CHECK_VERSION(2,22,0)
 	if (!g_file_info_has_namespace (info, "metadata")) {
 		g_object_unref (info);
 
 		return;
 	}
+#endif
 
 	attrs = g_file_info_list_attributes (info, "metadata");
 	for (i = 0; attrs[i]; i++) {