Add missing data unregistration

tests/main/tag_task_data_deps.c

@@ -1,6 +1,6 @@
 /* StarPU --- Runtime system for heterogeneous multicore architectures.
  *
- * Copyright (C) 2010-2013, 2016  Université de Bordeaux
+ * Copyright (C) 2010-2013, 2016-2017  Université de Bordeaux
  * Copyright (C) 2010, 2011, 2012, 2013, 2015, 2016  CNRS
  *
  * StarPU is free software; you can redistribute it and/or modify
@@ -253,6 +253,8 @@ int main(int argc, char **argv)
 		STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_wait");
 	} while(0);
 
+	starpu_data_unregister(handle1);
+	starpu_data_unregister(handle2);
 	starpu_shutdown();
 
 	return EXIT_SUCCESS;