concurrent: check realloc() rc and exit on failure
concurrent: check realloc() rc and exit on failure

Signed-off-by: Arjun Sreedharan <7b808d12fc3a073c7a7c0d57bb3dff4996ef61c0@gmail.com>
Acked-by: Serge E. Hallyn <3df611b026e4639bee8aef7a4beb2e39fcebb313@ubuntu.com>

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