git-refresh: fix for Solaris
branch
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58507 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
git-refresh: fix for Solaris
branch
if it is null, to getrid of substitutions which are not supported old Solaris.
[ruby-dev:50102] [Bug #13522]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58507 b2dd03c8-39d4-4d8f-98ff-823fe69b080e