From d7f3a1c14d4a57c6930e4bf67ae8410155e3d949 Mon Sep 17 00:00:00 2001
From: Ian Denhardt <ian@zenhack.net>
Date: Wed, 19 Apr 2023 19:27:01 -0400
Subject: [PATCH] exc.WrapError: return nil if the original error is nil.

I'm finding this convenient in Tempest
---
 exc/exc.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/exc/exc.go b/exc/exc.go
index 165df3f5..d4610bc5 100644
--- a/exc/exc.go
+++ b/exc/exc.go
@@ -27,6 +27,9 @@ func (e wrappedError) Unwrap() error {
 }
 
 func WrapError(prefix string, err error) error {
+	if err == nil {
+		return nil
+	}
 	return wrappedError{
 		prefix: prefix,
 		base:   err,