From: Timo Sirainen <timo.sirainen@dovecot.fi>
Date: Thu, 28 Dec 2017 17:40:29 +0000 (+0200)
Subject: lib: Make file_lock_free(NULL) no-op
X-Git-Tag: 2.3.9~2578
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=67654ca6848cdb83ef96be7a6584695f8a01535d;p=thirdparty%2Fdovecot%2Fcore.git

lib: Make file_lock_free(NULL) no-op
---

diff --git a/src/lib/file-lock.c b/src/lib/file-lock.c
index e86153ef33..7e584b95ff 100644
--- a/src/lib/file-lock.c
+++ b/src/lib/file-lock.c
@@ -414,6 +414,9 @@ void file_lock_free(struct file_lock **_lock)
 {
 	struct file_lock *lock = *_lock;
 
+	if (lock == NULL)
+		return;
+
 	*_lock = NULL;
 
 	if (lock->unlink_on_free)