[Constants] don't die processing non-ConstantInt GEP indices in isGEPWithNoNotionalOverIndexing() (PR31262)

This should fix:
https://llvm.org/bugs/show_bug.cgi?id=31262


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289401 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed