Wrong decompilation of deconstruction in foreach

[mmusu3]

Input code

using System.Collections.Immutable;

class EnumeratorDeconstructionTest
{
    struct Data
    {
        public int A;
        public int B;

        public void Deconstruct(out int a, out int b)
        {
            a = A;
            b = B;
        }
    }

    void Test(ImmutableArray<Data> array)
    {
        foreach (var item in array)
        {
            var (a, b) = item;

            Dummy(a);
        }
    }

    void Dummy(int v) { }
}

Erroneous output

using System.Collections.Immutable;

internal class EnumeratorDeconstructionTest
{
	private struct Data
	{
		public int A;

		public int B;

		public void Deconstruct(out int a, out int b)
		{
			a = A;
			b = B;
		}
	}

	private void Test(ImmutableArray<Data> array)
	{
		ImmutableArray<Data>.Enumerator enumerator = array.GetEnumerator();

		while (enumerator.MoveNext())
		{
			var (a, _) = (Data)(ref enumerator.Current);
			Dummy(a);
		}
	}

	private void Dummy(int v)
	{
	}
}

Details

Tested with ILSpy at commit fd6070d