bug fix for contact swapping
bug fix for contact swapping

nabijaczleweli/ODE,nabijaczleweli/ODE,keletskiy/ode,nabijaczleweli/ODE,keletskiy/ode,nabijaczleweli/ODE,nabijaczleweli/ODE,keletskiy/ode,keletskiy/ode,keletskiy/ode,keletskiy/ode,nabijaczleweli/ODE