Fix bytecode operand type

A value in unittests/Bytecodes.DecodeBytecodeAndOperands was 16 bit
instead of 8 bit. This was causing test to fail on big endian machines.

BUG=

Review-Url: https://codereview.chromium.org/2030063002
Cr-Commit-Position: refs/heads/master@{#36698}

test/unittests/interpreter/bytecodes-unittest.cc

@@ -205,7 +205,7 @@ TEST(Bytecodes, DecodeBytecodeAndOperands) {
        2,
        3,
        "            Ldar a1"},
-      {{B(Wide), B(CreateObjectLiteral), U16(513), U16(1027), U16(165)},
+      {{B(Wide), B(CreateObjectLiteral), U16(513), U16(1027), U8(165)},
        7,
        0,
        "CreateObjectLiteral.Wide [513], [1027], #165"},