fix: rate_limiter_bandwidth_ overflow

Author: chenbt-hz

src/pika_conf.cc

@@ -451,7 +451,7 @@ int PikaConf::Load() {
   rate_limiter_auto_tuned_ = at == "yes" || at.empty();
   // if rate limiter autotune enable, `rate_limiter_bandwidth_` will still be respected as an upper-bound.
   if (rate_limiter_auto_tuned_) {
-    rate_limiter_bandwidth_ = 10 * 1024 * 1024 * 1024; // 10GB/s
+    rate_limiter_bandwidth_ = 10LL * 1024 * 1024 * 1024; // 10GB/s
   }
 
   // max_write_buffer_num