Buf[GIF_STAMP_LEN] = 0;
if (strncmp(GIF_STAMP, (const char *) Buf, GIF_VERSION_POS) != 0) {
GifInternError(GifFile, D_GIF_ERR_NOT_GIF_FILE);
Buf[GIF_STAMP_LEN] = 0;
if (strncmp(GIF_STAMP, (const char *) Buf, GIF_VERSION_POS) != 0) {
GifInternError(GifFile, D_GIF_ERR_NOT_GIF_FILE);