psi: removed redundent return in updateCrc

stream/mts/psi/crc.go

@@ -35,15 +35,14 @@ import (
 // addCrc appends a crc table to a given psi table in bytes
 func addCrc(out []byte) []byte {
 	out = append(out, make([]byte, 4)...)
-	out = updateCrc(out)
+	updateCrc(out)
 	return out
 }
 
 // updateCrc updates the crc of bytes slice, writing the checksum into the last four bytes.
-func updateCrc(b []byte) []byte {
+func updateCrc(b []byte) {
 	crc32 := crc32_Update(0xffffffff, crc32_MakeTable(bits.Reverse32(crc32.IEEE)), b[1:len(b)-4])
 	binary.BigEndian.PutUint32(b[len(b)-4:], crc32)
-	return b
 }
 
 func crc32_MakeTable(poly uint32) *crc32.Table {

stream/mts/psi/helpers.go

@@ -70,7 +70,7 @@ func UpdateTime(dst []byte, t uint64) error {
 	for i := range dst[timeDataIndx : timeDataIndx+timeDataSize] {
 		dst[i+timeDataIndx] = ts[i]
 	}
-	dst = updateCrc(dst)
+	updateCrc(dst)
 	return nil
 }
 
@@ -115,7 +115,7 @@ func UpdateLocation(d []byte, s string) error {
 	}
 	gb := LocationStrBytes(s)
 	copy(d[locationDataIndx:locationDataIndx+locationDataSize], gb)
-	d = updateCrc(d)
+	updateCrc(d)
 	return nil
 }