PR19748: Make sure we don't lose colon protection after the parenthesized type-id in a cast-expression.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@208843 91177308-0d34-0410-b5e6-96231b3b80d8
Replace completely bogus ambiguous-compound-literal-in-C++ code with something
that isn't always wrong.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@208844 91177308-0d34-0410-b5e6-96231b3b80d8