[seahorse] gpg: add type casts to fix some compiler warnings.

[Niels De Graef <nielsdg src gnome org>]

commit 65920278860a7c330e7af18cd2255989ebed8f01
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Sat Aug 4 17:30:46 2018 +0200

    gpg: add type casts to fix some compiler warnings.

 pgp/seahorse-server-source.c | 7 ++++---
 pgp/seahorse-transfer.c      | 2 +-
 2 files changed, 5 insertions(+), 4 deletions(-)
---
diff --git a/pgp/seahorse-server-source.c b/pgp/seahorse-server-source.c
index 9619d477..0d19920d 100644
--- a/pgp/seahorse-server-source.c
+++ b/pgp/seahorse-server-source.c
@@ -233,9 +233,10 @@ seahorse_server_set_property (GObject *object, guint prop_id,
     SeahorseServerSource *ssrc = SEAHORSE_SERVER_SOURCE (object);
  
     switch (prop_id) {
-       case PROP_LABEL:
-               seahorse_server_source_set_label (ssrc, g_value_get_boxed (value));
-               break;
+    case PROP_LABEL:
+        seahorse_server_source_set_label (SEAHORSE_PLACE (ssrc),
+                                          g_value_get_boxed (value));
+        break;
     case PROP_KEY_SERVER:
         g_assert (ssrc->priv->server == NULL);
         ssrc->priv->server = g_strdup (g_value_get_string (value));
diff --git a/pgp/seahorse-transfer.c b/pgp/seahorse-transfer.c
index 65e79b35..35e3f8fc 100644
--- a/pgp/seahorse-transfer.c
+++ b/pgp/seahorse-transfer.c
@@ -275,7 +275,7 @@ seahorse_transfer_keyids_async (SeahorseServerSource *from,
 
        closure = g_new0 (TransferClosure, 1);
        closure->cancellable = cancellable ? g_object_ref (cancellable) : cancellable;
-       closure->from = g_object_ref (from);
+       closure->from = SEAHORSE_PLACE (g_object_ref (from));
        closure->to = g_object_ref (to);
        closure->keyids = g_strdupv ((gchar **)keyids);
        g_simple_async_result_set_op_res_gpointer (res, closure, transfer_closure_free);