valgrind: Guard MaximumMacOSRequirement [Linux] (#8863)
valgrind: Guard MaximumMacOSRequirement [Linux] (#8863)


rwhogg/homebrew-core,LinuxbrewTestBot/homebrew-core,Linuxbrew/homebrew-core,maxim-belkin/homebrew-core,LinuxbrewTestBot/homebrew-core,Linuxbrew/homebrew-core,rwhogg/homebrew-core,maxim-belkin/homebrew-core