Don't ignore allocation failure in virCommandAddEnvPassCommon
Don't ignore allocation failure in virCommandAddEnvPassCommon

The virCommandAddEnvPassCommon method ignored the failure to
pre-allocate the env variable array with VIR_RESIZE_N. While
this is harmless, it confuses the test harness which is trying
to validate OOM handling of every individual allocation call.

Signed-off-by: Daniel P. Berrange <bb938cf255e055ff3507f2627d214e8e62118fcf@redhat.com>

andreabolognani/libvirt,libvirt/libvirt,elmarco/libvirt,fabianfreyer/libvirt,agx/libvirt,zippy2/libvirt,zippy2/libvirt,jardasgit/libvirt,rlaager/libvirt,jardasgit/libvirt,crobinso/libvirt,nertpinx/libvirt,shugaoye/libvirt,libvirt/libvirt,eskultety/libvirt,eskultety/libvirt,cbosdo/libvirt,zhlcindy/libvirt-1.1.4-maintain,zippy2/libvirt,elmarco/libvirt,jardasgit/libvirt,jfehlig/libvirt,olafhering/libvirt,datto/libvirt,taget/libvirt,VenkatDatta/libvirt,taget/libvirt,rlaager/libvirt,jardasgit/libvirt,datto/libvirt,nertpinx/libvirt,zhlcindy/libvirt-1.1.4-maintain,jfehlig/libvirt,elmarco/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,shugaoye/libvirt,jardasgit/libvirt,crobinso/libvirt,olafhering/libvirt,shugaoye/libvirt,rlaager/libvirt,elmarco/libvirt,jfehlig/libvirt,cbosdo/libvirt,libvirt/libvirt,taget/libvirt,agx/libvirt,cbosdo/libvirt,fabianfreyer/libvirt,taget/libvirt,shugaoye/libvirt,eskultety/libvirt,agx/libvirt,olafhering/libvirt,zhlcindy/libvirt-1.1.4-maintain,elmarco/libvirt,zippy2/libvirt,zhlcindy/libvirt-1.1.4-maintain,shugaoye/libvirt,libvirt/libvirt,datto/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,VenkatDatta/libvirt,VenkatDatta/libvirt,agx/libvirt,eskultety/libvirt,VenkatDatta/libvirt,rlaager/libvirt,nertpinx/libvirt,zhlcindy/libvirt-1.1.4-maintain,crobinso/libvirt,andreabolognani/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,eskultety/libvirt,agx/libvirt,cbosdo/libvirt,andreabolognani/libvirt,rlaager/libvirt,VenkatDatta/libvirt,cbosdo/libvirt,datto/libvirt,andreabolognani/libvirt,olafhering/libvirt,crobinso/libvirt,nertpinx/libvirt,datto/libvirt,taget/libvirt