cache_mngr: Make providing the result pointer to nl_cache_mngr_add() optional

diff --git a/lib/cache_mngr.c b/lib/cache_mngr.c
index 15b545d83c478d17bba222ee83e7c0f881d329bb..39cf0ac026cceabda5875f0cc89c533720051f2d 100644 (file)
--- a/lib/cache_mngr.c
+++ b/lib/cache_mngr.c
@@ -169,7 +169,7 @@ errout:
  * @arg name           Name of cache to keep track of
  * @arg cb             Function to be called upon changes.
  * @arg data           Argument passed on to change callback
- * @arg result         Pointer to store added cache.
+ * @arg result         Pointer to store added cache (optional)
  *
  * Allocates a new cache of the specified type and adds it to the manager.
  * The operation will trigger a full dump request from the kernel to
@@ -259,7 +259,8 @@ retry:
        NL_DBG(1, "Added cache %p <%s> to cache manager %p\n",
               cache, nl_cache_name(cache), mngr);
 
-       *result = cache;
+       if (result)
+               *result = cache;
        return 0;
 
 errout_drop_membership: