Fix potential memory problems in GICP and IncrementalRegistration (#5557)

* Add missing aligned operator new to GICP: Matrix4 typedef might be vectorizable when Scalar == float

* Add missing aligned operator new to IncrementalRegistration

Author: themightyoarfish

registration/include/pcl/registration/gicp.h

@@ -113,6 +113,8 @@ class GeneralizedIterativeClosestPoint
       typename IterativeClosestPoint<PointSource, PointTarget, Scalar>::Matrix4;
   using AngleAxis = typename Eigen::AngleAxis<Scalar>;
 
+  PCL_MAKE_ALIGNED_OPERATOR_NEW;
+
   /** \brief Empty constructor. */
   GeneralizedIterativeClosestPoint()
   : k_correspondences_(20)

registration/include/pcl/registration/incremental_registration.h

@@ -111,6 +111,8 @@ class IncrementalRegistration {
   /** \brief Set registration instance used to align clouds */
   inline void setRegistration(RegistrationPtr);
 
+  PCL_MAKE_ALIGNED_OPERATOR_NEW;
+
 protected:
   /** \brief last registered point cloud */
   PointCloudConstPtr last_cloud_;