libvirtd: avoid memory leak on OOM
libvirtd: avoid memory leak on OOM

Detected by Coverity; only strikes on OOM so not serious.

* daemon/libvirtd.c (daemonPidFilePath): Plug leak.

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