pp


git-svn-id: https://geuz.org/svn/gmsh/trunk@17787 59c8cabf-10d6-4a28-b43f-3936b85956c4
fix crash when duplicate entries in tree


git-svn-id: https://geuz.org/svn/gmsh/trunk@17788 59c8cabf-10d6-4a28-b43f-3936b85956c4