refdb_fs: initialize backend version While the `git_refdb_backend()` struct has a version, we do not initialize it correctly when calling `git_refdb_backend_fs()`. Fix this by adding the call to `git_refdb_init_backend()`.
diff --git a/src/refdb_fs.c b/src/refdb_fs.c
index a721f98..1e53b3a 100644
--- a/src/refdb_fs.c
+++ b/src/refdb_fs.c
@@ -2129,6 +2129,9 @@ int git_refdb_backend_fs(
backend = git__calloc(1, sizeof(refdb_fs_backend));
GIT_ERROR_CHECK_ALLOC(backend);
+ if (git_refdb_init_backend(&backend->parent, GIT_REFDB_BACKEND_VERSION) < 0)
+ goto fail;
+
backend->repo = repository;
if (repository->gitdir) {