From: Josef 'Jeff' Sipek <jeff.sipek@dovecot.fi>
Date: Mon, 29 Jan 2018 13:40:27 +0000 (-0500)
Subject: lib-storage: mailbox_header_lookup_unref(NULL) should be a no-op
X-Git-Tag: 2.3.1~82
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4db31f1f405977ef53fdd61ea980fff2cb551938;p=thirdparty%2Fdovecot%2Fcore.git

lib-storage: mailbox_header_lookup_unref(NULL) should be a no-op
---

diff --git a/src/lib-storage/mailbox-header.c b/src/lib-storage/mailbox-header.c
index 2def864985..434e4191af 100644
--- a/src/lib-storage/mailbox-header.c
+++ b/src/lib-storage/mailbox-header.c
@@ -79,6 +79,9 @@ void mailbox_header_lookup_unref(struct mailbox_header_lookup_ctx **_ctx)
 {
 	struct mailbox_header_lookup_ctx *ctx = *_ctx;
 
+	if (ctx == NULL)
+		return;
+
 	*_ctx = NULL;
 
 	i_assert(ctx->refcount > 0);