svg file containing incorrect <svg:path /> cubic spline command in data attribute freezes QImage

1. Have a build of Qt including qtsvg and the qtsvg examples.
2. Download attached file issue.svg
3. Assuming that $PATH contains the path to svgviewer example install directory, run the command :

svgviewer ./issue.svg

From my investigations, the issue is related to the "d" attribute of the <svg:path id="167846128" /> node. 

The issue is the consequence of the last Bezier Cubic Spline command which has 3 identical coordinates : "C701.901,308.789,701.901,308.789"

I think that it is not correct to have a Bezier Cubic Spline defined with 3 identicals inflection coordinates, but should it have to freeze applications ? I think not.