fix to avoid :: in path after removing previous xrd path component.
fix to avoid :: in path after removing previous xrd path component.


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@44064 27541ba8-7e3a-0410-8455-c3a389f83636

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