Revert "builtins: erase `struct` modifier for EH personality"
Revert "builtins: erase `struct` modifier for EH personality"

This reverts SVN r311425 which broke one of the buildbots.  It is
unclear what header is being used there.  Revert it until that can be
handled properly.

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@311426 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt