Use lto_bool_t instead of a raw `bool` (fixup for r262977).

Hopefully this should bring
llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast back to life.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@262994 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed