fix a bug in retrieving errors when some parameters are fixed. Fixed problem reported in Forum, see  http://root.cern.ch/phpBB2/viewtopic.php?t=5277
fix a bug in retrieving errors when some parameters are fixed. Fixed problem reported in Forum, see  http://root.cern.ch/phpBB2/viewtopic.php?t=5277


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@19612 27541ba8-7e3a-0410-8455-c3a389f83636

bbannier/ROOT,bbannier/ROOT,dawehner/root,dawehner/root,dawehner/root,dawehner/root,dawehner/root,dawehner/root,dawehner/root,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,dawehner/root,bbannier/ROOT