good: use new gst_element_class_add_static_pad_template()

https://bugzilla.gnome.org/show_bug.cgi?id=763076
diff --git a/gst/rtp/gstrtpac3pay.c b/gst/rtp/gstrtpac3pay.c
index 9865894..021016d 100644
--- a/gst/rtp/gstrtpac3pay.c
+++ b/gst/rtp/gstrtpac3pay.c
@@ -100,10 +100,10 @@
 
   gstelement_class->change_state = gst_rtp_ac3_pay_change_state;
 
-  gst_element_class_add_pad_template (gstelement_class,
-      gst_static_pad_template_get (&gst_rtp_ac3_pay_src_template));
-  gst_element_class_add_pad_template (gstelement_class,
-      gst_static_pad_template_get (&gst_rtp_ac3_pay_sink_template));
+  gst_element_class_add_static_pad_template (gstelement_class,
+      &gst_rtp_ac3_pay_src_template);
+  gst_element_class_add_static_pad_template (gstelement_class,
+      &gst_rtp_ac3_pay_sink_template);
 
   gst_element_class_set_static_metadata (gstelement_class,
       "RTP AC3 audio payloader", "Codec/Payloader/Network/RTP",