memory leak when updating @@rocksdb_update_cf_options

storage/rocksdb/ha_rocksdb.cc

@@ -5438,6 +5438,9 @@ static int rocksdb_done_func(void *const p) {
   //rocksdb_tbl_options = nullptr;
   rocksdb_stats = nullptr;
 
+  my_free(rocksdb_update_cf_options);
+  rocksdb_update_cf_options = nullptr;
+
   my_error_unregister(HA_ERR_ROCKSDB_FIRST, HA_ERR_ROCKSDB_LAST);
 
   /*
@@ -14002,6 +14005,8 @@ rocksdb_set_update_cf_options(THD *const /* unused */,
 
   RDB_MUTEX_LOCK_CHECK(rdb_sysvars_mutex);
 
+  my_free(*reinterpret_cast<char **>(var_ptr));
+
   if (!val) {
     *reinterpret_cast<char **>(var_ptr) = nullptr;
     RDB_MUTEX_UNLOCK_CHECK(rdb_sysvars_mutex);