Mutex init can fail

It is obviously quite a serious problem if this happens, but mutex
initialization can fail and we should detect it.  It's a bit like
a memory allocation failure, in that you're probably pretty screwed
if this occurs, but at least we'll catch it.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/cache.c b/src/cache.c
index 6205ef8a9..afc7c5b3a 100644
--- a/src/cache.c
+++ b/src/cache.c
@@ -68,7 +68,10 @@ int git_cache_init(git_cache *cache)
 {
 	memset(cache, 0, sizeof(*cache));
 	cache->map = git_oidmap_alloc();
-	git_mutex_init(&cache->lock);
+	if (git_mutex_init(&cache->lock)) {
+		giterr_set(GITERR_OS, "Failed to initialize cache mutex");
+		return -1;
+	}
 	return 0;
 }