kernel32: fix use-after-close in create_process

[Dan Kegel]

Spotted by Guillaume ORTEGA.  He reports this fixes
http://bugs.winehq.org/show_bug.cgi?id=24101

Passes kernel32 tests.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: fix-use-after-close.patch
Type: text/x-patch
Size: 670 bytes
Desc: not available
URL: <http://www.winehq.org/pipermail/wine-patches/attachments/20100921/afcdf32d/attachment.bin>