np.meshgrid error

[mak27arr]

np.meshgrid return only first item second item break program with code 3221225477

[Nucs]

Fixed! np.meshgrid no longer crashes when accessing Item2:

var meshAB = np.meshgrid(np.arange(3), np.arange(3));
var item2 = meshAB.Item2;  // No crash ✓
Console.WriteLine(item2[0,0]);  // Works correctly

Duplicate of #408. Resolved via #600, #602, #603, #596.