resend twain cleanups

[Aric Stewart]

ChangeLog:
A few cleanups in twain code, using some consts from sane
make sure initialization happens properly
make sure the sane device list is proper.

  dlls/twain/ds_image.c     |   13 +++++++++++--
  dlls/twain/dsm_ctrl.c     |    2 ++
  dlls/twain/twain32_main.c |    1 +
  dlls/twain/twain_i.h      |    2 +-
  4 files changed, 15 insertions(+), 3 deletions(-)

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