coverity-detected bug: don't free "/"
coverity-detected bug: don't free "/"

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

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