pass const ref

git-svn-id: https://svn.code.sf.net/p/moneymanagerex/code/trunk@6420 7f5d68d0-c712-0410-839f-9b116a576cc5
pass const reference

git-svn-id: https://svn.code.sf.net/p/moneymanagerex/code/trunk@6421 7f5d68d0-c712-0410-839f-9b116a576cc5