Fixed bug in acollect introduced by 6728b19.
Fixed bug in acollect introduced by 6728b19.

graceful exit with "return 0" missed MPI cleanup call...

mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs