ws: Don't unreference null fixture pointer in test
ws: Don't unreference null fixture pointer in test

Suggested by Coverity.
Reviewed-by: Marius Vollmer <bb11c6e942c5cc765df5f04da146b3198127a7a3@redhat.com>

Scribery/cockpit,Thermionix/cockpit,michalskrivanek/cockpit,SotolitoLabs/cockpit,maxamillion/cockpit,cockpit-project/cockpit,nmav/cockpit,moraleslazaro/cockpit,deryni/cockpit,kkaempf/cockpit,larsu/cockpit,SotolitoLabs/cockpit,zigitax/cockpit,cockpit-project/cockpit,Armstrong1992/cockpit,Thermionix/cockpit,moraleslazaro/cockpit,vanloswang/cockpit,maxamillion/cockpit,SotolitoLabs/cockpit,larskarlitski/cockpit,mareklibra/cockpit,matobet/cockpit,nmav/cockpit,jscotka/cockpit,Scribery/cockpit,matobet/cockpit,haiyangd/cockpit_view,martinpitt/cockpit,evol262/cockpit,Armstrong1992/cockpit,sgallagher/cockpit,cockpituous/cockpit,zigitax/cockpit,zigitax/cockpit,deryni/cockpit,netzvieh/cockpit,larsu/cockpit,martinpitt/cockpit,vbatts/cockpit,kkaempf/cockpit,Thermionix/cockpit,andreasn/cockpit,moraleslazaro/cockpit,larsu/cockpit,larskarlitski/cockpit,garrett/cockpit,dperpeet/cockpit,larskarlitski/cockpit,darioajr/cockpit,Scribery/cockpit,Scribery/cockpit,evol262/cockpit,harishanand95/cockpit,FireDrunk/cockpit,cockpit-project/cockpit,harishanand95/cockpit,Thermionix/cockpit,andreasn/cockpit,petervo/cockpit,Armstrong1992/cockpit,matobet/cockpit,harishanand95/cockpit,jscotka/cockpit,garrett/cockpit,larsu/cockpit,netzvieh/cockpit,larskarlitski/cockpit,netzvieh/cockpit,deryni/cockpit,SotolitoLabs/cockpit,jscotka/cockpit,harishanand95/cockpit,denysvitali/cockpit,deryni/cockpit,evol262/cockpit,moolitayer/cockpit,petervo/cockpit,harishanand95/cockpit,sub-mod/cockpit,cockpituous/cockpit,Scribery/cockpit,netzvieh/cockpit,cockpituous/cockpit,mvollmer/cockpit,maxamillion/cockpit,FireDrunk/cockpit,deryni/cockpit,xhad/cockpit,vbatts/cockpit,martinpitt/cockpit,stefwalter/cockpit,moraleslazaro/cockpit,fridex/cockpit,firebitsbr/cockpit,sgallagher/cockpit,Scribery/cockpit,vbatts/cockpit,evol262/cockpit,xhad/cockpit,firebitsbr/cockpit,jscotka/cockpit,kkaempf/cockpit,dperpeet/cockpit,sgallagher/cockpit,kkaempf/cockpit,dperpeet/cockpit,zigitax/cockpit,netzvieh/cockpit,darioajr/cockpit,maxamillion/cockpit,xhad/cockpit,denysvitali/cockpit,garrett/cockpit,sub-mod/cockpit,petervo/cockpit,vanloswang/cockpit,haiyangd/cockpit_view,fridex/cockpit,martinpitt/cockpit,arilivigni/cockpit,matobet/cockpit,vanloswang/cockpit,matobet/cockpit,vanloswang/cockpit,nmav/cockpit,larsu/cockpit,dperpeet/cockpit,sub-mod/cockpit,darioajr/cockpit,zigitax/cockpit,Armstrong1992/cockpit,mareklibra/cockpit,haiyangd/cockpit_view,sgallagher/cockpit,firebitsbr/cockpit,dperpeet/cockpit,evol262/cockpit,maxamillion/cockpit,stefwalter/cockpit,FireDrunk/cockpit,cockpituous/cockpit,mvollmer/cockpit,Thermionix/cockpit,sgallagher/cockpit,cockpit-project/cockpit,sgallagher/cockpit,michalskrivanek/cockpit,sub-mod/cockpit,haiyangd/cockpit_view,fridex/cockpit,xhad/cockpit,moolitayer/cockpit,cockpit-project/cockpit,michalskrivanek/cockpit,SotolitoLabs/cockpit,vbatts/cockpit,arilivigni/cockpit,firebitsbr/cockpit,harishanand95/cockpit,mareklibra/cockpit,mvollmer/cockpit,cockpituous/cockpit,larskarlitski/cockpit,matobet/cockpit,stefwalter/cockpit,mareklibra/cockpit,haiyangd/cockpit_view,netzvieh/cockpit,nmav/cockpit,deryni/cockpit,Armstrong1992/cockpit,harishanand95/cockpit,vanloswang/cockpit,fridex/cockpit,jscotka/cockpit,vbatts/cockpit,arilivigni/cockpit,moolitayer/cockpit,mareklibra/cockpit,deryni/cockpit,mareklibra/cockpit,garrett/cockpit,mvollmer/cockpit,sgallagher/cockpit,moraleslazaro/cockpit,jscotka/cockpit,moraleslazaro/cockpit,SotolitoLabs/cockpit,Thermionix/cockpit,denysvitali/cockpit,andreasn/cockpit,xhad/cockpit,dperpeet/cockpit,andreasn/cockpit,mareklibra/cockpit,FireDrunk/cockpit,arilivigni/cockpit,michalskrivanek/cockpit,arilivigni/cockpit,nmav/cockpit,michalskrivanek/cockpit,cockpituous/cockpit,xhad/cockpit,andreasn/cockpit,larskarlitski/cockpit,evol262/cockpit,fridex/cockpit,andreasn/cockpit,denysvitali/cockpit,martinpitt/cockpit,Scribery/cockpit,petervo/cockpit,petervo/cockpit,larskarlitski/cockpit,stefwalter/cockpit,moolitayer/cockpit,kkaempf/cockpit,darioajr/cockpit,moraleslazaro/cockpit,sub-mod/cockpit,stefwalter/cockpit,arilivigni/cockpit,stefwalter/cockpit,vanloswang/cockpit,firebitsbr/cockpit,moolitayer/cockpit,stefwalter/cockpit,garrett/cockpit,darioajr/cockpit,denysvitali/cockpit,petervo/cockpit,dperpeet/cockpit,xhad/cockpit,mvollmer/cockpit,andreasn/cockpit,FireDrunk/cockpit,michalskrivanek/cockpit,vbatts/cockpit,petervo/cockpit,michalskrivanek/cockpit,larsu/cockpit,fridex/cockpit,SotolitoLabs/cockpit,vanloswang/cockpit,arilivigni/cockpit