lib: Update pool_add_external_ref() comment

diff --git a/src/lib/mempool.h b/src/lib/mempool.h
index d80a737ddd5218cd4cce60b4cb75a6eac8313978..d7100e21cba3d54370abc15261b7e9507901ade6 100644 (file)
--- a/src/lib/mempool.h
+++ b/src/lib/mempool.h
@@ -92,8 +92,9 @@ pool_t pool_allocfree_create_clean(const char *name);
    old_size + 1. */
 size_t pool_get_exp_grown_size(pool_t pool, size_t old_size, size_t min_size);
 
-/* Reference another memory pool in the given pool. When the pool is freed,
-   the referenced memory pools are also unreferenced. */
+/* Reference another memory pool in the given pool. This call also increases
+   the ref_pool's reference count. When the pool is freed, the referenced
+   memory pools are also unreferenced. */
 void pool_add_external_ref(pool_t pool, pool_t ref_pool);
 
 /* We require sizeof(type) to be <= UINT_MAX. This allows compiler to optimize