Coverity warning fix.


git-svn-id: svn+ssh://svn.cern.ch/reps/atlasoff/Control/RootUtils/trunk@550153 4525493e-7705-40b1-a816-d608a930855b
Fix clang warning.


git-svn-id: svn+ssh://svn.cern.ch/reps/atlasoff/Control/RootUtils/trunk@550157 4525493e-7705-40b1-a816-d608a930855b