Change clang-cc to expect that all inputs have the same language (so we can only construct a single LangInfo). This matches how it is used in practice (since the compiler only it invokes it for one file at a time).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86609 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed