diff options
| -rw-r--r-- | util/set.lua | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/util/set.lua b/util/set.lua index e4cc2dff..050446ec 100644 --- a/util/set.lua +++ b/util/set.lua @@ -82,8 +82,10 @@ function new(list) end function set:add_list(list) - for _, item in ipairs(list) do - items[item] = true; + if list then + for _, item in ipairs(list) do + items[item] = true; + end end end |