missing initialization of reverseMesh


git-svn-id: https://geuz.org/svn/gmsh/trunk@16497 59c8cabf-10d6-4a28-b43f-3936b85956c4
complain if curve.IsNull in closestPoint()


git-svn-id: https://geuz.org/svn/gmsh/trunk@16498 59c8cabf-10d6-4a28-b43f-3936b85956c4
thanks for the bug reports + patches, Wendy!


git-svn-id: https://geuz.org/svn/gmsh/trunk@16499 59c8cabf-10d6-4a28-b43f-3936b85956c4