kernel32: Intialise 16-bit stack to zero.

[Robert Shearman]

---
  dlls/kernel32/kernel_main.c |    2 +-
  1 files changed, 1 insertions(+), 1 deletions(-)

Otherwise dbghelp could sometimes get confused and think it should 
switch to 16-bit mode.
This results in messages such as the following when warn or tracing for 
the heap channel is turned on:
fixme:dbghelp:Failed to linearize address ????:55555555 ...
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 02d61e261cb42533470517bfa27bb4ae97911579.diff
Type: text/x-patch
Size: 731 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20080117/73a59b74/attachment.bin