More tests and a fix for braced init lists.

Before: f(new vector<int> { 1, 2, 3 });
After:  f(new vector<int>{ 1, 2, 3 });

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@182614 91177308-0d34-0410-b5e6-96231b3b80d8