clang-format: Fix incorrect indentation.

Before (JavaScript example, but can extend to other languages):
  return {
    a: 'E',
    b: function() {
      return function() {
      f();  // This is wrong.
      };
    }
  };

After:
  return {
    a: 'E',
    b: function() {
      return function() {
        f();  // This is better.
      };
    }
  };

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@210334 91177308-0d34-0410-b5e6-96231b3b80d8