From 2964d2ad158fc3e7d37874e097c19ece0b52eefd Mon Sep 17 00:00:00 2001
From: Michael Eischer <michael.eischer@fau.de>
Date: Sun, 9 Aug 2020 13:25:13 +0200
Subject: [PATCH] Skip unlocking for nil locks

Now that lockRepo receives a context, it is possible that it is canceled
before a lock was created. Thus `unlockRepo` must be able to handle this
case.
---
 cmd/restic/lock.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cmd/restic/lock.go b/cmd/restic/lock.go
index ad5ac6841..b0df2b685 100644
--- a/cmd/restic/lock.go
+++ b/cmd/restic/lock.go
@@ -86,6 +86,10 @@ func refreshLocks(wg *sync.WaitGroup, done <-chan struct{}) {
 }
 
 func unlockRepo(lock *restic.Lock) error {
+	if lock == nil {
+		return nil
+	}
+
 	globalLocks.Lock()
 	defer globalLocks.Unlock()