Fix two-vector unpack case.

Bug swiftshader:15

Change-Id: I351268b44491091c271d6c7c5b644cd21ffb623b
Reviewed-on: https://chromium-review.googlesource.com/403409
Reviewed-by: Jim Stichnoth <stichnot@chromium.org>
Tested-by: Nicolas Capens <nicolascapens@google.com>
1 file changed