[compiler-rt][crt] Pass -fno-lto in check_cxx_section_exists

Otherwise it doesn't work when building with -DLLVM_ENABLE_LTO=thin

(We hit this in Chromium in
https://bugs.chromium.org/p/chromium/issues/detail?id=966403)

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@369336 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed