Get rid of Exodiff build warnings
Get rid of Exodiff build warnings

refs #1777

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