[clang] [llvm] Fix Windows EH IP2State tables (remove +1 bias) (PR #144745)

[Eli Friedman via llvm-commits]

efriedma-quic wrote:

You might need to edit the FileCheck commands for the UEFI tests so there's a non-overlapping prefix it can use.  (When two outputs in the same test file are different, FileCheck usually splits the emitted checks on a per-function basis.)

https://github.com/llvm/llvm-project/pull/144745