configure.in: rb_cv_getcwd_malloc
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45615 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
configure.in: rb_cv_getcwd_malloc
buffer if NULL is given [ruby-core:62072] [Bug #9752]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45615 b2dd03c8-39d4-4d8f-98ff-823fe69b080e