storage: fix volDelete return when volume still being allocated
storage: fix volDelete return when volume still being allocated

volDelete used to return VIR_ERR_INTERNAL_ERROR when attempting to
delete a volume which was still being allocated. It should return
VIR_ERR_OPERATION_INVALID.

* src/storage/storage_driver.c: Fix return of volDelete.

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