From: Josef 'Jeff' Sipek <jeff.sipek@dovecot.fi>
Date: Fri, 25 May 2018 14:48:29 +0000 (-0400)
Subject: lib-fs: fs_unref(NULL) should be a no-op
X-Git-Tag: 2.3.2.rc1~11
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=3eb5fc7ad06c0e1a8758796aed8aa374ff42e3fe;p=thirdparty%2Fdovecot%2Fcore.git

lib-fs: fs_unref(NULL) should be a no-op
---

diff --git a/src/lib-fs/fs-api.c b/src/lib-fs/fs-api.c
index 9f79d4afef..215593b2ff 100644
--- a/src/lib-fs/fs-api.c
+++ b/src/lib-fs/fs-api.c
@@ -197,10 +197,16 @@ void fs_ref(struct fs *fs)
 void fs_unref(struct fs **_fs)
 {
 	struct fs *fs = *_fs;
-	string_t *last_error = fs->last_error;
-	struct array module_contexts_arr = fs->module_contexts.arr;
+	string_t *last_error;
+	struct array module_contexts_arr;
 	unsigned int i;
 
+	if (fs == NULL)
+		return;
+
+	last_error = fs->last_error;
+	module_contexts_arr = fs->module_contexts.arr;
+
 	i_assert(fs->refcount > 0);
 
 	*_fs = NULL;