doctor: fix undefined method `include?' for nil:NilClass

Closes https://github.com/Homebrew/homebrew-core/issues/2758
This commit is contained in:
Xu Cheng
2016-07-06 16:18:24 +08:00
parent ca005cb824
commit cc01d3f59a
@@ -314,6 +314,7 @@ module Homebrew
end
def check_for_beta_xquartz
return unless MacOS::XQuartz.version
return unless MacOS::XQuartz.version.include? "beta"
<<-EOS.undent