[folks] Remove use of deprecated GLib API in Vala 0.12

[Philip Withnall <pwithnall src gnome org>]

commit e6227d18e16b2aafe4f176b562504117980d0dd8
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Sun Dec 12 16:18:01 2010 +0000

    Remove use of deprecated GLib API in Vala 0.12

 folks/backend-store.vala |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/folks/backend-store.vala b/folks/backend-store.vala
index d6e13d0..7ab934f 100644
--- a/folks/backend-store.vala
+++ b/folks/backend-store.vala
@@ -425,7 +425,11 @@ public class Folks.BackendStore : Object {
            * aliases */
           var is_symlink = info.get_is_symlink ();
 
+#if VALA_0_12
+          string mime = ContentType.get_mime_type (content_type);
+#else
           string mime = g_content_type_get_mime_type (content_type);
+#endif
 
           if (file_type == FileType.DIRECTORY)
             {