Need to replace the entire proc in fence with group member

Replacing only the nspace leaves the group rank instead of
the proc's nspace rank, so we need to replace the entire
proc entry with the grp member's ID.

Signed-off-by: Ralph Castain <rhc@pmix.org>

src/server/pmix_server_ops.c

@@ -931,9 +931,9 @@ pmix_status_t pmix_server_fence(pmix_server_caddy_t *cd, pmix_buffer_t *buf,
                         rc = PMIX_ERR_BAD_PARAM;
                         goto cleanup;
                     }
-                    /* we own the procs array, so just replace the procs nspace
-                     * (which is the group ID) with that of the member */
-                    PMIX_LOAD_NSPACE(procs[n].nspace, grp->members[n].nspace);
+                    /* we own the procs array, so just replace the procs entry
+                     * with that of the member with that group rank */
+                    memcpy(&procs[n], &grp->members[procs[n].rank], sizeof(pmix_proc_t));
                 }
             }
         }