coverity: Check fcntl return value
coverity: Check fcntl return value

Signed-off-by: Stéphane Graber <089afc6d81f66f1168a9849e15660feae286e024@ubuntu.com>
Acked-by: Serge E. Hallyn <3df611b026e4639bee8aef7a4beb2e39fcebb313@ubuntu.com>

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