Allow static lambdas using '&' to get the address to participate in function pointers calculation

[kyoyama-kazusa]

Method:

unsafe void BubbleSort<T>(T[] array, delegate* managed<T, T, bool> comparer)
{
    int length = array.Length;
    for (int i = 0; i < length - 1; i++)
    {
        for (int j = 0; j < length - 1 - i; j++)
        {
            if (comparer(array[j], array[j + 1]))
            {
                var temp = array[j];
                array[j] = array[j + 1];
                array[j + 1] = temp;
            }
        }
    }
}

Caller:

int[] a = { 3, 8, 1, 6, 5, 4, 7, 2, 9 };
BubbleSort(a, &(static (a, b) => a >= b));

Which is same as:

// A static local function.
static bool localFunction(T a, T b) => a >= b;
BubbleSort(a, &localFunction);

Thank you.

[alrz]

Duplicate of #3476

[kyoyama-kazusa]

Sorry :(