https://bugs.gentoo.org/916906
https://github.com/jsummers/imageworsener/issues/47
https://github.com/jsummers/imageworsener/pull/46

From 91c7c79d86f55920193d17a7b87631b14ac7779f Mon Sep 17 00:00:00 2001
From: matoro <matoro@users.noreply.github.com>
Date: Mon, 15 Jan 2024 22:26:45 -0500
Subject: [PATCH] Pass diff exit code up to shell for test suite

Right now, test failures are not getting detected because the runtests
script does not pass up a failing exit code from diff.
---
 tests/runtest | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/runtest b/tests/runtest
index 6db7b6c..3f534dc 100755
--- a/tests/runtest
+++ b/tests/runtest
@@ -334,3 +334,4 @@ then
 	echo "All tests passed."
 fi
 
+exit $RET