do not report OOM error when prepareCall() failed
do not report OOM error when prepareCall() failed

We have reported error in the function prepareCall(), and
the error is not only OOM error. So we should not report
OOM error in the function call() when prepareCall() failed.

trainstack/libvirt,libvirt/libvirt,foomango/libvirt,rlaager/libvirt,crobinso/libvirt,eskultety/libvirt,zippy2/libvirt,danwent/libvirt-ovs,jfehlig/libvirt,agx/libvirt,elmarco/libvirt,leilihh/libvirt,trainstack/libvirt,bjzhang/libvirt,zhlcindy/libvirt-1.1.4-maintain,fabianfreyer/libvirt,andreabolognani/libvirt,taget/libvirt,kantai/libvirt-vfork,emaste/libvirt,nertpinx/libvirt,emaste/libvirt,elmarco/libvirt,iam-TJ/libvirt,rmarwaha/libvirt,wiedi/libvirt,usc-isi/libvirt,eskultety/libvirt,dumbbell/libvirt,jeckersb/libvirt,emaste/libvirt,rbu/libvirt,jfehlig/libvirt,usc-isi/libvirt,wiedi/libvirt,fabianfreyer/libvirt,eskultety/libvirt,novel/fbsd-libvirt,novel/fbsd-libvirt,trainstack/libvirt,novel/fbsd-libvirt,leilihh/libvirt,rmarwaha/libvirt1,danwent/libvirt-ovs,leilihh/libvirt,iam-TJ/libvirt,cbosdo/libvirt,usc-isi/libvirt,kantai/libvirt-vfork,rmarwaha/libvirt1,taget/libvirt,dumbbell/libvirt,datto/libvirt,jfehlig/libvirt,elmarco/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,danwent/libvirt-ovs,shugaoye/libvirt,jardasgit/libvirt,zhlcindy/libvirt-1.1.4-maintain,crobinso/libvirt,jardasgit/libvirt,shugaoye/libvirt,danwent/libvirt-ovs,fabianfreyer/libvirt,iam-TJ/libvirt,warewolf/libvirt,foomango/libvirt,soulxu/libvirt-xuhj,trainstack/libvirt,agx/libvirt,bjzhang/libvirt,rmarwaha/libvirt1,rbu/libvirt,elmarco/libvirt,andreabolognani/libvirt,cbosdo/libvirt,trainstack/libvirt,VenkatDatta/libvirt,leilihh/libvirt,agx/libvirt,soulxu/libvirt-xuhj,cbosdo/libvirt,VenkatDatta/libvirt,libvirt/libvirt,iam-TJ/libvirt,siboulet/libvirt-openvz,bjzhang/libvirt,jeckersb/libvirt,taget/libvirt,iam-TJ/libvirt,jardasgit/libvirt,rmarwaha/libvirt1,soulxu/libvirt-xuhj,dumbbell/libvirt,rmarwaha/libvirt,fabianfreyer/libvirt,libvirt/libvirt,rmarwaha/libvirt1,bjzhang/libvirt,warewolf/libvirt,agx/libvirt,andreabolognani/libvirt,wiedi/libvirt,emaste/libvirt,warewolf/libvirt,usc-isi/libvirt,elmarco/libvirt,agx/libvirt,cbosdo/libvirt,shugaoye/libvirt,novel/fbsd-libvirt,VenkatDatta/libvirt,rlaager/libvirt,rbu/libvirt,rmarwaha/libvirt,leilihh/libvirt,foomango/libvirt,fabianfreyer/libvirt,soulxu/libvirt-xuhj,foomango/libvirt,jeckersb/libvirt,crobinso/libvirt,dumbbell/libvirt,zippy2/libvirt,warewolf/libvirt,novel/fbsd-libvirt,cbosdo/libvirt,trainstack/libvirt,nertpinx/libvirt,kantai/libvirt-vfork,jeckersb/libvirt,jeckersb/libvirt,nertpinx/libvirt,jfehlig/libvirt,emaste/libvirt,shugaoye/libvirt,warewolf/libvirt,olafhering/libvirt,datto/libvirt,novel/fbsd-libvirt,olafhering/libvirt,libvirt/libvirt,foomango/libvirt,eskultety/libvirt,trainstack/libvirt,emaste/libvirt,novel/fbsd-libvirt,nertpinx/libvirt,jardasgit/libvirt,datto/libvirt,rmarwaha/libvirt,jardasgit/libvirt,zhlcindy/libvirt-1.1.4-maintain,rmarwaha/libvirt1,andreabolognani/libvirt,iam-TJ/libvirt,siboulet/libvirt-openvz,olafhering/libvirt,zhlcindy/libvirt-1.1.4-maintain,kantai/libvirt-vfork,VenkatDatta/libvirt,iam-TJ/libvirt,rbu/libvirt,datto/libvirt,rmarwaha/libvirt,siboulet/libvirt-openvz,crobinso/libvirt,rbu/libvirt,zhlcindy/libvirt-1.1.4-maintain,jeckersb/libvirt,soulxu/libvirt-xuhj,dumbbell/libvirt,novel/fbsd-libvirt,wiedi/libvirt,wiedi/libvirt,wiedi/libvirt,leilihh/libvirt,olafhering/libvirt,nertpinx/libvirt,zippy2/libvirt,rlaager/libvirt,novel/fbsd-libvirt,wiedi/libvirt,shugaoye/libvirt,zippy2/libvirt,jeckersb/libvirt,rmarwaha/libvirt,dumbbell/libvirt,siboulet/libvirt-openvz,datto/libvirt,taget/libvirt,kantai/libvirt-vfork,rlaager/libvirt,warewolf/libvirt,emaste/libvirt,siboulet/libvirt-openvz,eskultety/libvirt,warewolf/libvirt,taget/libvirt,danwent/libvirt-ovs,usc-isi/libvirt,rlaager/libvirt,bjzhang/libvirt