encoder: oops, uint16s are little-endian too

encode.go

@@ -135,7 +135,7 @@ func (e *Encoder) encodeInt(k reflect.Kind, i int64) {
 	case i > 0 && i < math.MaxUint8:
 		e.w.Write([]byte{opBinint1, byte(i)})
 	case i > 0 && i < math.MaxUint16:
-		e.w.Write([]byte{opBinint2, byte(i >> 8), byte(i)})
+		e.w.Write([]byte{opBinint2, byte(i), byte(i >> 8)})
 	case i >= math.MinInt32 && i <= math.MaxInt32:
 		e.w.Write([]byte{opBinint})
 		binary.Write(e.w, binary.LittleEndian, int32(i))