extend/os/linux/formula.rb: ignore_missing_libraries: change unless to if
extend/os/linux/formula.rb: ignore_missing_libraries: change unless to if

Change
```rb
      unless libraries.all? { |x| x.is_a?(String) || x.is_a?(Regexp) }
```
to
```rb
if libraries.any? { |x| !x.is_a?(String) && !x.is_a?(Regexp) }
```

Co-authored-by: Mike McQuaid <a17fed27eaa842282862ff7c1b9c8395a26ac320@mikemcquaid.com>
vitorgalvao/brew,EricFromCanada/brew,sjackman/homebrew,sjackman/homebrew,nandub/brew,Homebrew/brew,JCount/brew,reitermarkus/brew,JCount/brew,JCount/brew,EricFromCanada/brew,sjackman/homebrew,claui/brew,vitorgalvao/brew,mahori/brew,reitermarkus/brew,mahori/brew,nandub/brew,MikeMcQuaid/brew,MikeMcQuaid/brew,nandub/brew,reitermarkus/brew,mahori/brew,JCount/brew,claui/brew,vitorgalvao/brew,Homebrew/brew,mahori/brew,reitermarkus/brew,konqui/brew,claui/brew,sjackman/homebrew,nandub/brew,MikeMcQuaid/brew,Homebrew/brew,konqui/brew,konqui/brew,konqui/brew,EricFromCanada/brew,vitorgalvao/brew,MikeMcQuaid/brew,Homebrew/brew,claui/brew,EricFromCanada/brew