af3a4131b5
by heading off possible null pointer dereferences in grscan(). Also change getgrnam() slightly to properly handle the change: if grscan() returns an rval of 1 and leaves a '+' in the gr_name field and YP is enabled, poll the YP group.byname map before giving up. This should insure that we make every effort to find a match in the local and YP group databases before bailing out.