[Minor] Trim array instead of skipping checks

src/plugins/lua/forged_recipients.lua

@@ -48,7 +48,9 @@ local function check_forged_headers(task)
   -- Find pair for each smtp recipient in To or Cc headers
   -- This cycle has O(N^2) complexity so it is better to limit number of iterations
   if #smtp_rcpt > 100 or #mime_rcpt > 100 then
-    return
+    -- Trim array, suggested by Anton Yuzhaninov
+    smtp_rcpt[100] = nil
+    mime_rcpt[100] = nil
   end
 
   for _,sr in ipairs(smtp_rcpt) do