reset global mesh-pointer at deletion of ngx-mesh
reset global mesh-pointer at deletion of ngx-mesh

apieum/netgen,looooo/netgen,live-clones/netgen,live-clones/netgen,looooo/netgen,live-clones/netgen,apieum/netgen,apieum/netgen,apieum/netgen,looooo/netgen,jwpeterson/netgen,jwpeterson/netgen,looooo/netgen,looooo/netgen,live-clones/netgen,looooo/netgen,live-clones/netgen,apieum/netgen,jwpeterson/netgen,live-clones/netgen,jwpeterson/netgen,jwpeterson/netgen