nuiWidget matrix clean up

[Jaydee2190]

just to help out some cleaning up, in
~nuiwidget

for (int i=GetMatrixNodeCount();--i>=0;)
DelMatrixNode(i);

Otherwise the array is cleared without deleting the matrix nodes

[Sébastien Métrot]

closed by 1416b17
Widget matrix were not properly destroyed, thanks to Jaydee2190 for finding this one.