src/datawizard/interfaces/vector_interface.c: use dev_handle and not ptr when copying from/to opencl

src/datawizard/interfaces/vector_interface.c

@@ -414,8 +414,8 @@ static int copy_opencl_to_opencl_async(void *src_interface, unsigned src_node ST
 	struct starpu_vector_interface *dst_vector = dst_interface;
         int err, ret;
 
-	err = starpu_opencl_copy_opencl_to_opencl((cl_mem)src_vector->dev_handle, src_node, (cl_mem)dst_vector->ptr, dst_node, src_vector->nx*src_vector->elemsize,
-					       src_vector->offset, event, &ret);
+	err = starpu_opencl_copy_opencl_to_opencl((cl_mem)src_vector->dev_handle, src_node, (cl_mem)dst_vector->dev_handle, dst_node, src_vector->nx*src_vector->elemsize,
+						  src_vector->offset, event, &ret);
         if (STARPU_UNLIKELY(err))
                 STARPU_OPENCL_REPORT_ERROR(err);