Fix SA1513 incorrectly reported on object initializers without assignment

[Noryoko]

• Add regression tests for SA1513 falsely reported when using object initializer without asigning the object to a variable. #1301
• Fixes SA1513 falsely reported when using object initializer without asigning the object to a variable. #1301

[sharwell]

I think this change does not work with the following code. SA1513 should be reported on the } before the second return statement. Prior to this change it is reported, but afterwards it is not.

public void Example()
{
    new List<Action>
    {
        () =>
        {
            if (true)
            {
                return;
            }
            return;
        }
    };
}

[sharwell]

I made a mistake in my comment before. The strange behavior appears if you have an empty statement following the }. Notice that the ; is actually not part of the if statement here:

public void Example()
{
    new List<Action>
    {
        () =>
        {
            if (true)
            {
                return;
            };
        }
    };
}

Given its obscurity, this is something we may just want to file a bug for.