[tracker-miners] miners/fs: Fix compile warning in tracker-writeback-dispatcher.c

[Sam Thursfield <sthursfield src gnome org>]

commit ad3bff3415fbbdb9e67e99fc1613b64916d47408
Author: Sam Thursfield <sam afuera me uk>
Date:   Thu Jul 11 12:24:05 2019 +0100

    miners/fs: Fix compile warning in tracker-writeback-dispatcher.c
    
    Fixes this:
    
        [3/4] Compiling C object 
'src/miners/fs/8409082@@tracker-miner-fs@exe/tracker-writeback-dispatcher.c.o'.
        ../src/miners/fs/tracker-writeback-dispatcher.c: In function ‘writeback_dispatcher_writeback_file’:
        ../src/miners/fs/tracker-writeback-dispatcher.c:375:11: warning: assignment to ‘TrackerMinerFiles *’ 
{aka ‘struct TrackerMinerFiles *’} from incompatible pointer type ‘TrackerMinerFS *’ {aka ‘struct 
_TrackerMinerFS *’} [-Wincompatible-pointer-types]
          data->fs = g_object_ref (fs);

 src/miners/fs/tracker-writeback-dispatcher.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/miners/fs/tracker-writeback-dispatcher.c b/src/miners/fs/tracker-writeback-dispatcher.c
index 687a87133..8f8a38aeb 100644
--- a/src/miners/fs/tracker-writeback-dispatcher.c
+++ b/src/miners/fs/tracker-writeback-dispatcher.c
@@ -374,7 +374,7 @@ writeback_dispatcher_writeback_file (TrackerMinerFS *fs,
        data->retry_timeout = 0;
        data->self = self;
        g_object_weak_ref (G_OBJECT (data->self), self_weak_notify, data);
-       data->fs = g_object_ref (fs);
+       data->fs = TRACKER_MINER_FILES (g_object_ref (fs));
        data->file = g_object_ref (file);
        data->results = g_ptr_array_ref (results);
        data->rdf_types = g_strdupv (rdf_types);