Fix default stmt without break

[felipensp]

Fix #45

[medvednikov]

some weird unrelated CI error

  SDL2::SDL2

  but the target was not found.  Possible reasons include:

    * There is a typo in the target name.
    * A find_package call is missing for an IMPORTED target.
    * An ALIAS target is missing.
    * ```

[ArtemkaKun]

Yeah, not sure how to deal with it (and I also have no mac to test). Spytheman assumed that maybe this is because SDL2 update. I will try to resolve it somehow in v/Doom repo, and will merge this changes later

[ArtemkaKun]

I failed to fix it, this is something related strictly to macOS.
Also, I found that I hate CMake and dependency management (or at least this is what my first experience with CMake was).