错误使用strcpy_s

[tearshark]

multipart_parser* multipart_parser_init
(const char boundary, const multipart_parser_settings settings) {

size_t boundary_length = strlen(boundary);
multipart_parser* p = malloc(sizeof(multipart_parser) +
boundary_length +
boundary_length + 9);

strcpy_s(p->multipart_boundary, boundary_length, boundary);

boundary_length 这个参数给得有问题，应该是boundary_length + 1