Unpack enums in CodeCompletetionResult.

In theory they should be wide enough even when the enum type is signed, but it
looks like MSVC9 still has problems with it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@157182 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed