Address valgrind issue (#8619)
Address valgrind issue (#8619)

backmari/moose,idaholab/moose,SudiptaBiswas/moose,YaqiWang/moose,yipenggao/moose,nuclear-wizard/moose,permcody/moose,andrsd/moose,idaholab/moose,backmari/moose,dschwen/moose,sapitts/moose,lindsayad/moose,liuwenf/moose,jessecarterMOOSE/moose,laagesen/moose,milljm/moose,lindsayad/moose,SudiptaBiswas/moose,harterj/moose,harterj/moose,bwspenc/moose,friedmud/moose,bwspenc/moose,friedmud/moose,harterj/moose,permcody/moose,backmari/moose,milljm/moose,idaholab/moose,bwspenc/moose,laagesen/moose,YaqiWang/moose,permcody/moose,dschwen/moose,lindsayad/moose,yipenggao/moose,Chuban/moose,laagesen/moose,lindsayad/moose,milljm/moose,jessecarterMOOSE/moose,laagesen/moose,nuclear-wizard/moose,idaholab/moose,SudiptaBiswas/moose,liuwenf/moose,Chuban/moose,permcody/moose,bwspenc/moose,nuclear-wizard/moose,SudiptaBiswas/moose,dschwen/moose,sapitts/moose,liuwenf/moose,andrsd/moose,yipenggao/moose,dschwen/moose,jessecarterMOOSE/moose,yipenggao/moose,Chuban/moose,harterj/moose,liuwenf/moose,backmari/moose,friedmud/moose,jessecarterMOOSE/moose,milljm/moose,laagesen/moose,sapitts/moose,bwspenc/moose,YaqiWang/moose,lindsayad/moose,liuwenf/moose,harterj/moose,idaholab/moose,dschwen/moose,andrsd/moose,jessecarterMOOSE/moose,YaqiWang/moose,sapitts/moose,nuclear-wizard/moose,milljm/moose,SudiptaBiswas/moose,liuwenf/moose,friedmud/moose,andrsd/moose,andrsd/moose,Chuban/moose,sapitts/moose