[CMake] Fix LLVM_ENABLE_EH and LLVM_ENABLE_RTTI on MSVC

Patch by Johannes Sebastian Mueller-Roemer.

Differential Revision: https://reviews.llvm.org/D23645


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@280371 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed