[calls] sip: call: Remove unnecessary G_OBJECT() cast

[Evangelos Ribeiro Tzaras <devrtz src gnome org>]

commit 2d4c3f9b4385340f69ae2be10f525f143796d6e0
Author: Evangelos Ribeiro Tzaras <devrtz fortysixandtwo eu>
Date:   Mon Feb 28 19:11:16 2022 +0100

    sip: call: Remove unnecessary G_OBJECT() cast
    
    g_object_set() takes a gpointer as argument, so there is no need to cast the
    argument using G_OBJECT()

 plugins/sip/calls-sip-call.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/plugins/sip/calls-sip-call.c b/plugins/sip/calls-sip-call.c
index 8bcd5740..9740e03f 100644
--- a/plugins/sip/calls-sip-call.c
+++ b/plugins/sip/calls-sip-call.c
@@ -110,7 +110,7 @@ try_setting_up_media_pipeline (CallsSipCall *self)
   g_debug ("Setting remote ports: RTP/RTCP %u/%u",
            self->rport_rtp, self->rport_rtcp);
 
-  g_object_set (G_OBJECT (self->pipeline),
+  g_object_set (self->pipeline,
                 "remote", self->remote,
                 "rport-rtp", self->rport_rtp,
                 "rport-rtcp", self->rport_rtcp,