[Minor] Do not bother about parts with no filename

diff --git a/lualib/lua_fuzzy.lua b/lualib/lua_fuzzy.lua
index 30ec278c81fd0a02257d9b0c910bc9caa67af7c7..fadf4fa6ab4024a91d07b18bf4dc99f8a0341e06 100644 (file)
--- a/lualib/lua_fuzzy.lua
+++ b/lualib/lua_fuzzy.lua
@@ -240,7 +240,11 @@ exports.check_mime_part = function(task, part, rule_id)
     return true,false
   end
 
-  return mime_types_check(task, part, rule)
+  if part:get_filename() then
+    return mime_types_check(task, part, rule)
+  end
+
+  return false,false
 end
 
 return exports
\ No newline at end of file