single byte is sufficient indication that it is not a gzip file) */
//printf("strm->next_in[0]=%d strm->next_in[1]=%d\n", strm->next_in[0], strm->next_in[1]);
if (strm->avail_in > 1 &&
- ((strm->next_in[0] == 31 && strm->next_in[1] == 139)
- || (strm->next_in[0] == 40 && strm->next_in[1] == 181))) { // zstd
+ ((strm->next_in[0] == 31 && strm->next_in[1] == 139) /* gz header */
+ || (strm->next_in[0] == 40 && strm->next_in[1] == 181))) { /* zstd header */
inflateReset(strm);
state.state->how = GZIP;
state.state->direct = 0;