No longer treat an INVALID instruction as a special case for which an expression vector can't be built. Since INVALID has no operands, the code will correctly build an empty vector.
No longer treat an INVALID instruction as a special case for
which an expression vector can't be built. Since INVALID has
no operands, the code will correctly build an empty vector.

Review URL: http://codereview.chromium.org/6229001

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@4124 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client