Fix small issue in Mesh class when passing values-array that all are the samee value.
Fix small issue in Mesh class when passing values-array that all are the samee value.

chrisidefix/visvis,Alwnikrotikz/visvis,Alwnikrotikz/visvis,pbfy0/visvis,Alwnikrotikz/visvis,pbfy0/visvis,chrisidefix/visvis,chrisidefix/visvis,pbfy0/visvis