Fix missing require statement for ucl.null

diff --git a/lualib/lua_mime.lua b/lualib/lua_mime.lua
index 80e1080b59b4fc215533e97e7b3800a3887f1be8..02329badd65d58f00d788bb047c8a4bb75a88906 100644 (file)
--- a/lualib/lua_mime.lua
+++ b/lualib/lua_mime.lua
@@ -21,6 +21,7 @@ limitations under the License.
 
 local rspamd_util = require "rspamd_util"
 local rspamd_text = require "rspamd_text"
+local ucl = require "ucl"
 
 local exports = {}