The logic in THistPainter::PaintTable to invoke PaintStat2 was wrong.

The first object in the list of functions is not always (and rarely)
a TF2 object. One must iterate on the list of functions to find the
first object deriving from TF1.


git-svn-id: http://root.cern.ch/svn/root/trunk@5019 27541ba8-7e3a-0410-8455-c3a389f83636