fixed a bug in crosstabs

git-svn-id: http://svn.code.sf.net/p/dynamicreports/code/trunk@808 bf0c503b-2351-4f66-9eae-aa52f3279a3f
fixed a bug in crosstabs - junit test

git-svn-id: http://svn.code.sf.net/p/dynamicreports/code/trunk@809 bf0c503b-2351-4f66-9eae-aa52f3279a3f