Added missing argument in the export of AttachScorer

loop/pymod/export_loop_candidate.cc

@@ -125,6 +125,6 @@ void export_loop_candidate()
     .def("Add", &AddLoopCandidate,(arg("loop_candidate")))
     .def("Add", &AddBackbone,arg(arg("bb_list")))
     .def("Remove", &LoopCandidates::Remove,(arg("index")))
-    .def("AttachScorer",&LoopCandidates::AttachScorer)
+    .def("AttachScorer",&LoopCandidates::AttachScorer,(arg("scorer")))
   ;
 }