SA1514 (A documentation comment must be preceded by a blank line...) not reported when immediately preceded by a single line comment

[oatkins]

The following should, but does not, generate an analyzer warning. (It does in legacy StyleCop.)

// Something in advance.
/// <summary>
/// The YetMore class.
/// </summary>
public static class YetMore { }

The above code should be "fixed" by inserting a blank line before the documentation comments, though this would currently add a violation of SA1512 without a fix for #1130.

[Noryoko]

Grabbing this.