Lua: Fix console pretty-print output not showing zero or negative keys in tables

data/lua/ilua.lua

@@ -50,7 +50,9 @@ function ilua.join(tbl,delim,limit,depth)
     end
     for key,v in pairs(tbl) do
         if type(key) == 'number' then
-            if key <= n then goto continue end
+            if n > 0 and key > 0 and key <= n and math.type(key) == 'integer' then
+                goto continue
+            end
             key = '['..tostring(key)..']'
         else
             key = tostring(key)