adding a fix for a logic issue due to the way the new argparse module handles options not specified (None type). References #2069
adding a fix for a logic issue due to the way the new argparse module handles options not specified (None type). References #2069

r19979

danielru/moose,jasondhales/moose,nuclear-wizard/moose,danielru/moose,yipenggao/moose,jessecarterMOOSE/moose,YaqiWang/moose,apc-llc/moose,lindsayad/moose,katyhuff/moose,kasra83/moose,waxmanr/moose,wgapl/moose,markr622/moose,stimpsonsg/moose,jinmm1992/moose,nuclear-wizard/moose,xy515258/moose,liuwenf/moose,jbair34/moose,WilkAndy/moose,SudiptaBiswas/moose,katyhuff/moose,permcody/moose,joshua-cogliati-inl/moose,zzyfisherman/moose,tonkmr/moose,tonkmr/moose,WilkAndy/moose,capitalaslash/moose,roystgnr/moose,zzyfisherman/moose,waxmanr/moose,raghavaggarwal/moose,jhbradley/moose,waxmanr/moose,liuwenf/moose,shanestafford/moose,YaqiWang/moose,idaholab/moose,shanestafford/moose,Chuban/moose,idaholab/moose,SudiptaBiswas/moose,giopastor/moose,andrsd/moose,jiangwen84/moose,liuwenf/moose,laagesen/moose,zzyfisherman/moose,milljm/moose,nuclear-wizard/moose,SudiptaBiswas/moose,bwspenc/moose,jbair34/moose,jessecarterMOOSE/moose,milljm/moose,jiangwen84/moose,jhbradley/moose,friedmud/moose,stimpsonsg/moose,liuwenf/moose,roystgnr/moose,jinmm1992/moose,milljm/moose,bwspenc/moose,dschwen/moose,permcody/moose,sapitts/moose,shanestafford/moose,mellis13/moose,raghavaggarwal/moose,dschwen/moose,andrsd/moose,milljm/moose,markr622/moose,giopastor/moose,danielru/moose,wgapl/moose,jbair34/moose,bwspenc/moose,idaholab/moose,markr622/moose,backmari/moose,roystgnr/moose,bwspenc/moose,yipenggao/moose,cpritam/moose,katyhuff/moose,jessecarterMOOSE/moose,jiangwen84/moose,sapitts/moose,waxmanr/moose,joshua-cogliati-inl/moose,roystgnr/moose,cpritam/moose,Chuban/moose,zzyfisherman/moose,joshua-cogliati-inl/moose,cpritam/moose,capitalaslash/moose,tonkmr/moose,zzyfisherman/moose,liuwenf/moose,jhbradley/moose,raghavaggarwal/moose,friedmud/moose,backmari/moose,markr622/moose,giopastor/moose,raghavaggarwal/moose,lindsayad/moose,jhbradley/moose,andrsd/moose,stimpsonsg/moose,capitalaslash/moose,harterj/moose,roystgnr/moose,YaqiWang/moose,capitalaslash/moose,YaqiWang/moose,permcody/moose,idaholab/moose,laagesen/moose,backmari/moose,wgapl/moose,tonkmr/moose,liuwenf/moose,xy515258/moose,cpritam/moose,stimpsonsg/moose,roystgnr/moose,lindsayad/moose,harterj/moose,jasondhales/moose,jiangwen84/moose,lindsayad/moose,jasondhales/moose,jbair34/moose,mellis13/moose,dschwen/moose,yipenggao/moose,SudiptaBiswas/moose,shanestafford/moose,jessecarterMOOSE/moose,SudiptaBiswas/moose,sapitts/moose,apc-llc/moose,yipenggao/moose,jessecarterMOOSE/moose,WilkAndy/moose,WilkAndy/moose,andrsd/moose,tonkmr/moose,dschwen/moose,lindsayad/moose,mellis13/moose,andrsd/moose,tonkmr/moose,katyhuff/moose,idaholab/moose,jinmm1992/moose,sapitts/moose,cpritam/moose,shanestafford/moose,joshua-cogliati-inl/moose,WilkAndy/moose,jasondhales/moose,bwspenc/moose,friedmud/moose,friedmud/moose,wgapl/moose,harterj/moose,dschwen/moose,adamLange/moose,xy515258/moose,sapitts/moose,adamLange/moose,laagesen/moose,shanestafford/moose,apc-llc/moose,backmari/moose,milljm/moose,adamLange/moose,laagesen/moose,kasra83/moose,adamLange/moose,harterj/moose,Chuban/moose,giopastor/moose,permcody/moose,Chuban/moose,WilkAndy/moose,harterj/moose,kasra83/moose,zzyfisherman/moose,mellis13/moose,nuclear-wizard/moose,apc-llc/moose,cpritam/moose,danielru/moose,xy515258/moose,roystgnr/moose,jinmm1992/moose,laagesen/moose,kasra83/moose