[LVI] Speculative fix for assertion seen in clang bots

I'll clean this up and add a test case shortly.  I want to make sure this does actually fix the bots; if not, I'll revert.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@267617 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed