storage_backend_fs: avoid NULL dereference on opendir failure

* src/storage_backend_fs.c (virStorageBackendFileSystemRefresh):
Don't call closedir on a NULL pointer.

diff --git a/src/storage_backend_fs.c b/src/storage_backend_fs.c
index 65b656d47f5ecc6110dcd5a2dbb404f9d6d09d72..82415049cedf22c47f9111cbe1dbe2af981b08a7 100644 (file)
--- a/src/storage_backend_fs.c
+++ b/src/storage_backend_fs.c
@@ -983,7 +983,8 @@ no_memory:
     /* fallthrough */
 
  cleanup:
-    closedir(dir);
+    if (dir)
+        closedir(dir);
     virStorageVolDefFree(vol);
     virStoragePoolObjClearVols(pool);
     return -1;