修复分配一个大小为负数的[]byte，导致OOM

[Ning-Qing]

#154

[ghost]

Sider has detected 1 warning on analyzing the commit ea2be3f.

• ⚠️ Goodcheck

If the errors persist even after retrying, the following actions may resolve them:

• Update tool dependencies
• Configure failed tools
• Configure sider.yml
• Turn off unused tools

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[bxq2011hust]

In which situation will this problem occur？