[HUST CSE] fix: Fixed return value of the function #1986
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…为空指针，函数返回-1表示出错。如果函数成功执行，则返回0表示没有错误发生)
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请帮忙修改commit message 具体可以上网搜下git message的格式 |
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两个函数中，如果输入参数result为空指针，函数返回-1表示出错。如果函数成功执行，则返回0表示没有错误发生