Fix up the ExceptionDemo for some API changes over the past <time>

This still doesn't build -Werror clean, but other than that it should at
least build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244994 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed