const correctness.

diff --git a/src/lib/audio_ring_buffers.cc b/src/lib/audio_ring_buffers.cc
index b4fea485e8d795ea79052139fffc6923551ac234..4471f6cda1897eba6f0a74f3f69ad793e6453678 100644 (file)
--- a/src/lib/audio_ring_buffers.cc
+++ b/src/lib/audio_ring_buffers.cc
@@ -95,7 +95,7 @@ AudioRingBuffers::clear ()
 }
 
 Frame
-AudioRingBuffers::size ()
+AudioRingBuffers::size () const
 {
        boost::mutex::scoped_lock lm (_mutex);
        Frame s = 0;