bump reva

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

vendor/github.com/segmentio/kafka-go/protocol/size.go

@@ -0,0 +1,33 @@
+package protocol
+
+import (
+	"math/bits"
+)
+
+func sizeOfVarString(s string) int {
+	return sizeOfVarInt(int64(len(s))) + len(s)
+}
+
+func sizeOfVarNullBytes(b []byte) int {
+	if b == nil {
+		return sizeOfVarInt(-1)
+	}
+	n := len(b)
+	return sizeOfVarInt(int64(n)) + n
+}
+
+func sizeOfVarNullBytesIface(b Bytes) int {
+	if b == nil {
+		return sizeOfVarInt(-1)
+	}
+	n := b.Len()
+	return sizeOfVarInt(int64(n)) + n
+}
+
+func sizeOfVarInt(i int64) int {
+	return sizeOfUnsignedVarInt(uint64((i << 1) ^ (i >> 63))) // zig-zag encoding
+}
+
+func sizeOfUnsignedVarInt(i uint64) int {
+	return (bits.Len64(i|1) + 6) / 7
+}