From a1ffd230b7e83264b6bbeff0ed1d440ea5960e9f Mon Sep 17 00:00:00 2001
From: Fred Hebert <mononcqc@ferd.ca>
Date: Wed, 13 May 2020 14:17:04 +0000
Subject: [PATCH] silence build-breaking warning on OTP-23

---
 src/r3_hex_tarball.erl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/r3_hex_tarball.erl b/src/r3_hex_tarball.erl
index 9bc7a69c..a80ca153 100644
--- a/src/r3_hex_tarball.erl
+++ b/src/r3_hex_tarball.erl
@@ -223,7 +223,7 @@ do_unpack(Files, OuterChecksum, Output) ->
 finish_unpack({error, _} = Error) ->
     Error;
 finish_unpack(#{metadata := Metadata, files := Files, inner_checksum := InnerChecksum, outer_checksum := OuterChecksum, output := Output}) ->
-    _Version = maps:get("VERSION", Files),
+    _ = maps:get("VERSION", Files),
     ContentsBinary = maps:get("contents.tar.gz", Files),
     filelib:ensure_dir(filename:join(Output, "*")),
     case unpack_tarball(ContentsBinary, Output) of