Attach to skeleton 2.4 > 2.5

Hi,

i just noticed some bug when attaching skinned meshes at runtime to skeletons.

As example:

var mySkinnedMesh = mesh[0];
var myOtherSkinnedMesh = mesh[1];
myOtherSkinnedMesh.skeleton = mySkinnedMesh.skeleton;

This is working well in v2.4.
With the current release, the attached mesh is slightly offset.