[Fix] fix error check in lua_dkim_tools.lua

diff --git a/lualib/lua_dkim_tools.lua b/lualib/lua_dkim_tools.lua
index 69c9462b56e3a5266116e86eb1a1bf94e636639b..37c3b163b86254c115e45b7d91f503b1294dc205 100644 (file)
--- a/lualib/lua_dkim_tools.lua
+++ b/lualib/lua_dkim_tools.lua
@@ -678,7 +678,7 @@ exports.sign_using_vault = function(N, task, settings, selector, sign_func, err_
             nvalid = nvalid + 1
             sign_func(task, dkim_sign_data)
           end, fun.filter(is_selector_valid, elts))
-          for _, e in errs do
+          for _, e in ipairs(errs) do
             lua_util.debugm(N, task, 'error found during processing Vault selectors: %s:%s',
               e[1], e[2])
           end