os/mac: fall back to old environment.

Can't see how this could ever happen but let's safe-guard it just in case (as ilovezfs saw it).
2016-09-19 09:17:35 +01:00 · 2016-09-19 09:17:35 +01:00 · a09799f25a
commit a09799f25a
parent 6e1312d4a1
1 changed files with 1 additions and 1 deletions
--- a/Library/Homebrew/os/mac.rb
+++ b/Library/Homebrew/os/mac.rb
@ -24,7 +24,7 @@ module OS
    # This can be compared to numerics, strings, or symbols
    # using the standard Ruby Comparable methods.
    def full_version
-      @full_version ||= Version.new(ENV["HOMEBREW_MACOS_VERSION"].chomp)
+      @full_version ||= Version.new((ENV["HOMEBREW_MACOS_VERSION"] || ENV["HOMEBREW_OSX_VERSION"]).chomp)
    end

    def prerelease?