fix a bug in computing the upper limit when the range of plot was different than range of variables.  See http://root.cern.ch/phpBB3/viewtopic.php?f=15&t=16164
fix a bug in computing the upper limit when the range of plot was different than range of variables. 
See http://root.cern.ch/phpBB3/viewtopic.php?f=15&t=16164


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@48842 27541ba8-7e3a-0410-8455-c3a389f83636

bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT