[gnome-online-miners/wip/facebook] src: remove a warning

[Álvaro Peña <alvaropg src gnome org>]

commit ad21f1a0005fe9cc2b0e7b39d1363db2cc63c460
Author: Álvaro Peña <alvaropg gmail com>
Date:   Tue Jul 23 21:33:57 2013 +0200

    src: remove a warning

 src/gom-facebook-miner.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gom-facebook-miner.c b/src/gom-facebook-miner.c
index 276b590..f602ff0 100644
--- a/src/gom-facebook-miner.c
+++ b/src/gom-facebook-miner.c
@@ -285,7 +285,7 @@ account_miner_job_process_photo (GomAccountMinerJob *job, GFBGraphPhoto *photo,
                                                             job->cancellable, error,
                                                             &resource_exists,
                                                             job->datasource_urn, identifier,
-                                                            "nfo:RemoteDataObject", class, NULL);
+                                                            "nfo:RemoteDataObject", (const gchar *) class, 
NULL);
   if (*error != NULL)
     goto out;