PR18477: Create a function scope representing the constructor call when
handling C++11 default initializers. Without this, other parts of Sema (such as
lambda capture) would think the default initializer is part of the surrounding
function scope.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199453 91177308-0d34-0410-b5e6-96231b3b80d8