修复v3.5.5版本中write-buffer-size溢出问题

Author: zhouguanghan

include/pika_conf.h

@@ -675,7 +675,7 @@ class PikaConf : public pstd::BaseConf {
     TryPushDiffCommands("max-background-jobs", std::to_string(value));
     max_background_jobs_ = value;
   }
-  void SetWriteBufferSize(const int& value) {
+  void SetWriteBufferSize(int64_t value) {
     std::lock_guard l(rwlock_);
     TryPushDiffCommands("write-buffer-size", std::to_string(value));
     write_buffer_size_ = value;

src/pika_admin.cc

@@ -2692,7 +2692,7 @@ void ConfigCmd::ConfigSet(std::shared_ptr<DB> db) {
       res_.AppendStringRaw("-ERR Set write-buffer-size wrong: " + s.ToString() + "\r\n");
       return;
     }
-    g_pika_conf->SetWriteBufferSize(static_cast<int>(ival));
+    g_pika_conf->SetWriteBufferSize(ival);
     res_.AppendStringRaw("+OK\r\n");
   } else if (set_item == "max-write-buffer-num") {
     if (pstd::string2int(value.data(), value.size(), &ival) == 0) {