Update dependencies

vendor/github.com/klauspost/compress/huff0/bitwriter.go

@@ -13,6 +13,14 @@ type bitWriter struct {
 	out          []byte
 }
 
+// bitMask16 is bitmasks. Has extra to avoid bounds check.
+var bitMask16 = [32]uint16{
+	0, 1, 3, 7, 0xF, 0x1F,
+	0x3F, 0x7F, 0xFF, 0x1FF, 0x3FF, 0x7FF,
+	0xFFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF, 0xFFFF,
+	0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
+	0xFFFF, 0xFFFF} /* up to 16 bits */
+
 // addBits16Clean will add up to 16 bits. value may not contain more set bits than indicated.
 // It will not check if there is space for them, so the caller must ensure that it has flushed recently.
 func (b *bitWriter) addBits16Clean(value uint16, bits uint8) {
@@ -52,22 +60,6 @@ func (b *bitWriter) encTwoSymbols(ct cTable, av, bv byte) {
 	b.nBits += encA.nBits + encB.nBits
 }
 
-// encFourSymbols adds up to 32 bits from four symbols.
-// It will not check if there is space for them,
-// so the caller must ensure that b has been flushed recently.
-func (b *bitWriter) encFourSymbols(encA, encB, encC, encD cTableEntry) {
-	bitsA := encA.nBits
-	bitsB := bitsA + encB.nBits
-	bitsC := bitsB + encC.nBits
-	bitsD := bitsC + encD.nBits
-	combined := uint64(encA.val) |
-		(uint64(encB.val) << (bitsA & 63)) |
-		(uint64(encC.val) << (bitsB & 63)) |
-		(uint64(encD.val) << (bitsC & 63))
-	b.bitContainer |= combined << (b.nBits & 63)
-	b.nBits += bitsD
-}
-
 // flush32 will flush out, so there are at least 32 bits available for writing.
 func (b *bitWriter) flush32() {
 	if b.nBits < 32 {
@@ -94,9 +86,10 @@ func (b *bitWriter) flushAlign() {
 
 // close will write the alignment bit and write the final byte(s)
 // to the output.
-func (b *bitWriter) close() {
+func (b *bitWriter) close() error {
 	// End mark
 	b.addBits16Clean(1, 1)
 	// flush until next byte.
 	b.flushAlign()
+	return nil
 }