Function status_size

src/butil/status.cpp:25–30

namespace butil {

inline size_t status_size(size_t message_size) {
    // Add 1 because even if the sum of size is aligned with int, we need to
    // put an ending '\0'
    return ((offsetof(Status::State, message) + message_size)
            / sizeof(int) + 1) * sizeof(int);
}

int Status::set_errorv(int c, const char* fmt, va_list args) {
    if (0 == c) {