const compress/gzip.gzipID1

3 uses

	compress/gzip (current package)
		gunzip.go#L20: 	gzipID1     = 0x1f
		gunzip.go#L185: 	if z.buf[0] != gzipID1 || z.buf[1] != gzipID2 || z.buf[2] != gzipDeflate {
		gzip.go#L147: 		z.buf = [10]byte{0: gzipID1, 1: gzipID2, 2: gzipDeflate}