BOPAlgo_CheckerSI crashed due to building of pcurve for an edge not lying on surface. The fix avoids building of pcurves in this algorithm.
The new flag has been added in BOPAlgo_PaveFiller class (method SetAvoidBuildPCurve). It tells whether to avoid building pcurves. It is worth to set if the result is not used to create splits of faces, as in example with BOPAlgo_CheckerSI.
