Bug in LoopMover_Refine_Backrub.cc ?

Hi,
It seems that there is a bug in LoopMover_Refine_Backrub.cc. When I use this mover in my protocol, my programme exit with en error from BackrubMover::add_segment() function (input pose is null). So I read the code and found that the author may forget to set the input pose. I added two line codes after line 135 in LoopMover_Refine_Backrub.cc. Now it works.

line 134: protocols::moves::BackrubMover backrubmover;
line 135: backrubmover.branchopt().read_database();

/////////////////////my codes//////////////////////////////////
core::pose::PoseCOP pose_copy = new core::pose::Pose(pose);
backrubmover.set_input_pose(pose_copy);
////////////////////////////////////////////////////////////////////

//clear segments and set the input pose
backrubmover.clear_segments();