High: ringbuffer: Make max_size of ringbuffer accurate so shm ipc max msg size value is honored
High: ringbuffer: Make max_size of ringbuffer accurate so shm ipc max msg size value is honored

ClusterLabs/libqb,rubenk/libqb,kgaillot/libqb,ClusterLabs/libqb,davidvossel/libqb,rubenk/libqb,kgaillot/libqb,ClusterLabs/libqb,gao-yan/libqb,kgaillot/libqb,davidvossel/libqb,gao-yan/libqb