Fix a bug introduced when the collective selection logic was changed to allow for a different component to be used for each collective.

Passing the barrier module to the bcast function is a bad idea when barrier is using a different component from bcast..

This commit was SVN r16212.

ompi/mpi/c/bcast.c

@@ -83,6 +83,6 @@ int MPI_Bcast(void *buffer, int count, MPI_Datatype datatype,
     /* Invoke the coll component to perform the back-end operation */
 
     err = comm->c_coll.coll_bcast(buffer, count, datatype, root, comm,
-                                  comm->c_coll.coll_barrier_module);
+                                  comm->c_coll.coll_bcast_module);
     OMPI_ERRHANDLER_RETURN(err, comm, err, FUNC_NAME);
 }