SUSYTools d0 syst bugfix for muons
Using the dec_d0sig for a comparison caused the decorator to not be properly accessed when running with systematics. An accessor should be used anyway, which fixes the problem in this MR.
The logfiles from the ctests can be found here: /afs/cern.ch/work/w/wfawcett/public/SUSYTools_MR
Edited by William James Fawcett