hotfix: gcc complains about uninitialized vectors in SE3.h

include/core/math/SE3.h

@@ -399,8 +399,8 @@ inline VectorComposite plus(const VectorComposite& x, const VectorComposite& tau
 {
     VectorComposite res;
 
-    res['P'] = Vector3d();
-    res['O'] = Vector4d();
+    res['P'] = Vector3d::Zero();
+    res['O'] = Vector4d::Zero();
 
     plus(x, tau, res);