Original commit message from CVS:
* gst-libs/gst/audio/gstringbuffer.c: (gst_ring_buffer_get_type),
(gst_ring_buffer_open_device), (gst_ring_buffer_close_device),
(gst_ring_buffer_device_is_open), (gst_ring_buffer_acquire),
(gst_ring_buffer_release), (gst_ring_buffer_set_flushing),
(gst_ring_buffer_start), (gst_ring_buffer_pause_unlocked),
(gst_ring_buffer_pause), (gst_ring_buffer_stop),
(gst_ring_buffer_delay), (gst_ring_buffer_samples_done),
(gst_ring_buffer_set_sample), (gst_ring_buffer_clear_all),
(gst_ring_buffer_commit), (gst_ring_buffer_prepare_read),
(gst_ring_buffer_clear):
Small cleanups.
Added some G_LIKELY.