dia.Link: fix labels updating in FF (connectionLength=NaN)
dia.Link: fix labels updating in FF (connectionLength=NaN)

validol-ekb/joint,DavidDurman/joint,automagic/joint,kumilingus/joint,automagic/joint,ubergrafik/joint,kmansel/joint,ColinFrick/joint,validol-ekb/joint,kumilingus/joint,kumilingus/joint,vtalas/joint,chill117/joint,laurentj/joint,durai145/joint,josenberg/joint,DavidDurman/joint,gagaboy/joint,vebin/joint,DavidDurman/joint,kumilingus/joint,durai145/joint,eric-seekas/joint,chill117/joint,vebin/joint,alirezamirian/joint,vtalas/joint,tsuibin/joint,alirezamirian/joint,ubergrafik/joint,gagaboy/joint,tsuibin/joint,kmansel/joint,clientIO/joint,SrTobi/joint,vtalas/joint,clientIO/joint,laurentj/joint,gagaboy/joint,SrTobi/joint,clientIO/joint,chill117/joint,clientIO/joint,eric-seekas/joint,ColinFrick/joint,josenberg/joint