https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/merge_requests/878
- Remove an unneeded initialization to zero from AmfParser - Add missing initialization to gst_amf_serialize_command_valist - Add a g_return_if_fail to gst_rtmp_connection_request_window_size https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/merge_requests/878
For master, without autotools.