avoid gcc 4.4 warning
avoid gcc 4.4 warning

chrisdembia/simbody,chrisdembia/simbody,Gjacquenot/simbody,simbody/simbody,robojukie/simbody,elkingtonmcb/simbody,robojukie/simbody,chrisdembia/simbody,Gjacquenot/simbody,scamille/simbody,scamille/simbody,elen4/simbody,robojukie/simbody,scamille/simbody,elkingtonmcb/simbody,elkingtonmcb/simbody,simbody/simbody,Gjacquenot/simbody,elen4/simbody