#460 Segfault when deleting mesh with "Show Non Manifold Edges"

[Ramón Casero]

MeshLab_64bit v1.3.3 (compiled from source code)
Ubuntu Linux trusty

1. Import mesh (vertices 4575, faces 9146)
2. Render -> Show Non Manifold Edges
3. View -> Show Layer Dialog
4. On the Layer Dialog, right click and "Delete Current Mesh"

Meshlab crashes with segmentation fault.