widl: Clear padding in the buffer due to alignment.

[Robert Shearman]

---
  tools/widl/typegen.c |    1 +
  1 files changed, 1 insertions(+), 0 deletions(-)

This isn't done in MIDL, but I think it's desirable both for silencing 
Valgrind warnings and for security purposes (fixes potential for leaking 
information to remote computers or other processes).
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