Comment 3 for bug 1535444

This patch fix the bug, anyway still freeze because broken SVG on smarting, the same original-d with a full Power Stroke LPE whith the same values + missing ones, render without freeze.
Also fix a bug pointed by suv aplying over a big ellipse a power stroke, no know bug reported.
Also fix bug: #1236320
Also Fix -not sure why but currently dont happens 1586973
This patch need backtrace to 2GEOM