feat: fix table.unpack nil handling issue specific to LuaJIT bytecode compilation

Author: Roxanne63

lib/resty/openssl/kdf.lua

@@ -140,7 +140,8 @@ function _M.derive(options)
   end
 
   for k, v in pairs(options_schema) do
-    local v, err = check_options(options, typ, k, unpack(v))
+    -- don't use unpack here to avoid nil truncation
+    local v, err = check_options(options, typ, k, v[1],v[2],v[3])
     if err then
       return nil, "kdf.derive: " .. err
     end