lib: hash_table_destroy(NULL) should be a no-op

diff --git a/src/lib/hash.c b/src/lib/hash.c
index 3f53c6ac35a989c3d590c4785e4ff94d53d8126d..57b44421fe9d2b12fef3318a1fbce3539ab41f91 100644 (file)
--- a/src/lib/hash.c
+++ b/src/lib/hash.c
@@ -133,6 +133,8 @@ void hash_table_destroy(struct hash_table **_table)
 {
        struct hash_table *table = *_table;
 
+       if (table == NULL)
+               return;
        *_table = NULL;
 
        i_assert(table->frozen == 0);