win32.c: rb_dir_getwd_ospath
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59061 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
win32.c: rb_dir_getwd_ospath
moved from dir.c. get rid of freeing malloced memory by xfree.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59061 b2dd03c8-39d4-4d8f-98ff-823fe69b080e