[PATCH 0/1] ptrace: wait_task_zombie: s/->parent/->real_parent/

[Oleg Nesterov]

Another chunk from

	[RFC PATCH 7/X] ptrace: mv task->parent ptrace_task->pt_tracer
	http://marc.info/?l=linux-kernel&m=124321008612056

which is not just s/->parent/->ptrace_task->pt_tracer/.

Cleanup/preparation, no functional changes. I didn't notice this
"->parent" when I did other "do not use ->parent" cleanups.

Oleg.

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