Fix off-by-one error in zeroing out slots between n and previous fLast; only fill up to fLast not fSize (what for? we know only slots up to fLast were filled).
Fix off-by-one error in zeroing out slots between n and previous fLast; only fill up to fLast not fSize (what for? we know only slots up to fLast were filled).


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@42332 27541ba8-7e3a-0410-8455-c3a389f83636

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