#2441 - small tidy

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@21526 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2441 - bit more

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@21528 b5f69653-2bf5-0310-8201-b0dafb8e1405