hhctrl.ocx: Fix the character count passed to GetFullPathNameW in OpenCHM and NavigateToChm.

[Robert Shearman]

---
  dlls/hhctrl.ocx/chm.c  |    2 +-
  dlls/hhctrl.ocx/help.c |    2 +-
  2 files changed, 2 insertions(+), 2 deletions(-)
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