[llvm] [ARM][ISel] Fix crash of ISD::FMINNUM/FMAXNUM (PR #65849)

[David Green via llvm-commits]

https://github.com/davemgreen approved this pull request.

Thanks. Some of the tests are showing some worse scalization but for what you are fixing this LGTM. Thanks for the fix.

https://github.com/llvm/llvm-project/pull/65849