tmf: Fix HistogramDataProvider index OOB#200

MatthewKhouzam merged 1 commit intoeclipse-tracecompass:mastereclipse-tracecompass/org.eclipse.tracecompass:masterfrom

awendelin-work:check-histogramquery-returnawendelin-work/org.eclipse.tracecompass:check-histogramquery-returnCopy head branch name to clipboard