From d17746740cfdff0c408f8bf7e4f1dd75ab08c37c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Niemier?= <lukasz@niemier.pl>
Date: Fri, 12 Oct 2018 01:34:01 +0200
Subject: [PATCH] Handle case when process already ended

As there is no way to differentiate between "already ended" and "never
existed" PIDs it will return `:ok` even when provided never-existing
PID.
---
 lib/imager/runner.ex | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/imager/runner.ex b/lib/imager/runner.ex
index 40f447b..324cc61 100644
--- a/lib/imager/runner.ex
+++ b/lib/imager/runner.ex
@@ -36,6 +36,7 @@ defmodule Imager.Runner do
 
     receive do
       {:DOWN, ^ref, :process, ^pid, :normal} -> :ok
+      {:DOWN, ^ref, :process, ^pid, :noproc} -> :ok
       {:DOWN, ^ref, :process, ^pid, _} -> :error
     end
   end