Now we don't do execute("gCling = (cling::Interpreter*)some_ptr") at startup.
This cause the number of unique wrappers to decrease by 1. 

Fix the test correspondingly.


git-svn-id: https://root.cern.ch/svn/root/trunk@48854 27541ba8-7e3a-0410-8455-c3a389f83636