win32.h: fix for VC9
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40722 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
win32.h: fix for VC9
from intptr_t and uintptr_t, since VC9 defines the latters only in
crtdefs.h.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40722 b2dd03c8-39d4-4d8f-98ff-823fe69b080e