From 7f66a70eec3db66fba3dd4a73d5a0151546d2a2f Mon Sep 17 00:00:00 2001
From: Edward Thomson <ethomson@github.com>
Date: Mon, 23 Jan 2017 23:00:00 +0000
Subject: [PATCH] attr_cache_remove: don't remove given file

If `attr_cache_lookup_entry` fails to find the given file, make sure
that we do not try to free the given file.
---
 src/attrcache.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/attrcache.c b/src/attrcache.c
index 0ade38c7c..cf0707ef0 100644
--- a/src/attrcache.c
+++ b/src/attrcache.c
@@ -121,20 +121,22 @@ static int attr_cache_remove(git_attr_cache *cache, git_attr_file *file)
 {
 	int error = 0;
 	git_attr_file_entry *entry;
+	git_attr_file *old = NULL;
 
 	if (!file)
 		return 0;
+
 	if ((error = attr_cache_lock(cache)) < 0)
 		return error;
 
 	if ((entry = attr_cache_lookup_entry(cache, file->entry->path)) != NULL)
-		file = git__compare_and_swap(&entry->file[file->source], file, NULL);
+		old = git__compare_and_swap(&entry->file[file->source], file, NULL);
 
 	attr_cache_unlock(cache);
 
-	if (file) {
-		GIT_REFCOUNT_OWN(file, NULL);
-		git_attr_file__free(file);
+	if (old) {
+		GIT_REFCOUNT_OWN(old, NULL);
+		git_attr_file__free(old);
 	}
 
 	return error;