Fix 64-bit build issues.
Fix 64-bit build issues.

These were introduced by #11505.

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