Modify SampleTest.C to avoid unused value warning
Modify SampleTest.C to avoid unused value warning

jessecarterMOOSE/moose,milljm/moose,harterj/moose,milljm/moose,SudiptaBiswas/moose,andrsd/moose,lindsayad/moose,sapitts/moose,sapitts/moose,lindsayad/moose,milljm/moose,laagesen/moose,idaholab/moose,bwspenc/moose,laagesen/moose,jessecarterMOOSE/moose,idaholab/moose,harterj/moose,nuclear-wizard/moose,bwspenc/moose,sapitts/moose,laagesen/moose,sapitts/moose,andrsd/moose,laagesen/moose,andrsd/moose,bwspenc/moose,idaholab/moose,lindsayad/moose,nuclear-wizard/moose,sapitts/moose,idaholab/moose,andrsd/moose,milljm/moose,lindsayad/moose,bwspenc/moose,dschwen/moose,harterj/moose,bwspenc/moose,jessecarterMOOSE/moose,lindsayad/moose,SudiptaBiswas/moose,jessecarterMOOSE/moose,dschwen/moose,idaholab/moose,SudiptaBiswas/moose,harterj/moose,dschwen/moose,jessecarterMOOSE/moose,milljm/moose,SudiptaBiswas/moose,SudiptaBiswas/moose,andrsd/moose,dschwen/moose,harterj/moose,nuclear-wizard/moose,nuclear-wizard/moose,laagesen/moose,dschwen/moose