Function stbi_info

lite/example/cpp_example/mge/cv/stb_image.h:8393–8401

#ifndef STBI_NO_STDIO
STBIDEF int stbi_info(char const* filename, int* x, int* y, int* comp) {
    FILE* f = stbi__fopen(filename, "rb");
    int result;
    if (!f)
        return stbi__err("can't fopen", "Unable to open file");
    result = stbi_info_from_file(f, x, y, comp);
    fclose(f);
    return result;
}

STBIDEF int stbi_info_from_file(FILE* f, int* x, int* y, int* comp) {
    int r;