禁止函数返回值类型与定义不一致

1unsigned int foo(int x)
2{
3    if (x < 0)
4    {
5        return -1;
禁止函数返回值类型与定义不一致 [gjb8114-r-1-7-10]
6    }
7    return x;
禁止函数返回值类型与定义不一致 [gjb8114-r-1-7-10]
8}