Wrong value assigned to 2nd order Radial Distortion Coefficient

[filby89]

In file Kin2_mex.cpp line 283 where the depth intrinsics are taken from kinect the wrong value is assigned to the 2nd order radial distortion coeffcient (the value of the principal point in the y axis):

rd2 = mxCreateDoubleScalar(intrinsics.PrincipalPointY);