[DynInst_API:] [dyninst/dyninst] 9696c6: Fix vector instruction lengths (#1439)

[kupsch <noreply@xxxxxxxxxx>]

  Branch: refs/heads/master
  Home:   https://github.com/dyninst/dyninst
  Commit: 9696c64a3a1d6f41241d27c3c51820616490efa6
      https://github.com/dyninst/dyninst/commit/9696c64a3a1d6f41241d27c3c51820616490efa6
  Author: kupsch <kupsch@xxxxxxxxxxx>
  Date:   2023-06-15 (Thu, 15 Jun 2023)

  Changed paths:
    M common/src/arch-x86.C

  Log Message:
  -----------
  Fix vector instruction lengths (#1439)

The following instruction decoded with the wrong length if the modrm
operand specified a memory access as all the operand was incorrectly
specified to be a register only operand:

- vcvtpd2udq
- vcvtss2usi
- vcvttpd2qq
- vcvtudq2pd
- vcvtudq2ps
- vpblendd
- vpermpd