Ignore FormulaUnreadableError in Formula.each.

[reitermarkus]

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same change?
• Have you added an explanation of what your changes do and why you'd like us to include them?
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• Have you successfully run brew tests with your changes locally?

---

Fixes Cask CI error. (Homebrew/homebrew-cask#88669)

[maxim-belkin]

👍

[maxim-belkin]

Tested locally - it works, that is: I see tracebacks like this

/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/brew.rb (Formulary::FromPathLoader): loading /home/linuxbrew/.linuxbrew/Homebrew/Library/Taps/maxim-belkin/homebrew-core/Formula/l-smash.rb
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formula.rb:2772:in `disable!'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Taps/maxim-belkin/homebrew-core/Formula/l-smash.rb:25:in `<class:LSmash>'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Taps/maxim-belkin/homebrew-core/Formula/l-smash.rb:1:in `load_formula'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formulary.rb:44:in `module_eval'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formulary.rb:44:in `load_formula'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formulary.rb:65:in `load_formula_from_path'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formulary.rb:150:in `load_file'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formulary.rb:140:in `klass'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formulary.rb:136:in `get_formula'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formulary.rb:347:in `factory'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formula.rb:1463:in `block in each'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formula.rb:1462:in `each'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formula.rb:1462:in `each'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/description_cache_store.rb:37:in `populate_if_empty!'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/description_cache_store.rb:63:in `update_from_formula_names!'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/tap.rb:297:in `block in install'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/cache_store.rb:17:in `use'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/tap.rb:295:in `install'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/cmd/tap.rb:64:in `tap'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/brew.rb:119:in `<main>'
Error: Failed to import: /home/linuxbrew/.linuxbrew/Homebrew/Library/Taps/maxim-belkin/homebrew-core/Formula/l-smash.rb
l-smash: Calling `disable!` without a reason is deprecated! Use `disable! because: "reason"` instead.
Please report this issue to the maxim-belkin/core tap (not Homebrew/brew or Homebrew/core), or even better, submit a PR to fix it:
  /home/linuxbrew/.linuxbrew/Homebrew/Library/Taps/maxim-belkin/homebrew-core/Formula/l-smash.rb:25

but brew tap homebrew/cask succeeds.