[llvm] [GlobalISel] Fix dangling reference in CombinerHelper::matchCombineExtractedVectorLoad (PR #134363)

[Vladislav Dzhidzhoev via llvm-commits]

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

Looks good to me. Do you have commit access, or do you need me to merge this for you?

https://github.com/llvm/llvm-project/pull/134363