coverity: dont dereference before null check
coverity: dont dereference before null check

Signed-off-by: Serge Hallyn <3df611b026e4639bee8aef7a4beb2e39fcebb313@ubuntu.com>

rowhit/lxc,GreatFruitOmsk/lxc,sapun/lxc,regit/lxc,Ponce/lxc,sapun/lxc,weizhenwei/lxc,ysbnim/lxc,QingweiPeterLan/cs188-lxc,JohnPeacockMessageSystems/lxc,rowhit/lxc,JohnPeacockMessageSystems/lxc,aeris/lxc,DarknessBeforeDawn/lxc,cjwatson/lxc,caglar10ur/lxc,akshaykarle/lxc,yubo/lxc,christiaan/lxc,cjwatson/lxc,DarknessBeforeDawn/lxc,szaszg/lxc,hfuCN/lxc,hallyn/lxc,Distrotech/lxc,codebauss/lxc,szaszg/lxc,weizhenwei/lxc,LynxChaus/lxc,jirislaby/lxc,LynxChaus/lxc,Pelagicore/lxc,cjwatson/lxc,ioops/lxc,bmoar/lxc,ecarrara/lxc,major/lxc,virajs/lxc,regit/lxc,lazy404/lxc,ysbnim/lxc,fwilson42/lxc,ss1h2a3tw/lxc,bmoar/lxc,jirislaby/lxc,ioops/lxc,federicobriata/lxc,rldleblanc/lxc,tych0/lxc,rldleblanc/lxc,virajs/lxc,terceiro/lxc,rldleblanc/lxc,akshaykarle/lxc,hkjolhede/lxc,raspberrypython/lxc,lisongmin/lxc,thmo/lxc,tych0/lxc,QingweiPeterLan/cs188-lxc,ojkastl/lxc_Patches,ss1h2a3tw/lxc,aeris/lxc,hkjolhede/lxc,Distrotech/lxc,yubo/lxc,thmo/lxc,thmo/lxc,Pelagicore/lxc,codebauss/lxc,sapun/lxc,caglar10ur/lxc,weizhenwei/lxc,ioops/lxc,fwilson42/lxc,aeris/lxc,codebauss/lxc,Pelagicore/lxc,caglar10ur/lxc,Ponce/lxc,ecarrara/lxc,hfuCN/lxc,LynxChaus/lxc,bostjan/lxc,hallyn/lxc,armcc/lxc,szaszg/lxc,lazy404/lxc,armcc/lxc,christiaan/lxc,rowhit/lxc,GreatFruitOmsk/lxc,lazy404/lxc,federicobriata/lxc,major/lxc,ojkastl/lxc_Patches,hallyn/lxc,regit/lxc,JohnPeacockMessageSystems/lxc,ksperis/lxc,federicobriata/lxc,ksperis/lxc,terceiro/lxc,ojkastl/lxc_Patches,fwilson42/lxc,glensc/lxc,jirislaby/lxc,ecarrara/lxc,terceiro/lxc,virajs/lxc,armcc/lxc,glensc/lxc,hkjolhede/lxc,efiop/lxc,yubo/lxc,bostjan/lxc,lisongmin/lxc,efiop/lxc,ksperis/lxc,bostjan/lxc,glensc/lxc,raspberrypython/lxc,raspberrypython/lxc,ss1h2a3tw/lxc,efiop/lxc,Ponce/lxc,ysbnim/lxc,lisongmin/lxc,ojkastl/lxc_Patches,Distrotech/lxc,QingweiPeterLan/cs188-lxc,tych0/lxc,GreatFruitOmsk/lxc,DarknessBeforeDawn/lxc,akshaykarle/lxc,bmoar/lxc,major/lxc,christiaan/lxc,hfuCN/lxc