MPI3 (unchanged in 4) says that errors after MPI_REQUEST_FREE are FATAL

Signed-off-by: Aurelien Bouteiller <bouteill@icl.utk.edu>

ompi/mca/pml/ob1/pml_ob1_recvreq.h

@@ -179,7 +179,9 @@ recv_request_pml_complete(mca_pml_ob1_recv_request_t *recvreq)
 
         if(true == recvreq->req_recv.req_base.req_free_called) {
             if( MPI_SUCCESS != recvreq->req_recv.req_base.req_ompi.req_status.MPI_ERROR ) {
-                OMPI_ERRHANDLER_NOHANDLE_INVOKE(MPI_ERR_REQUEST, "Recv error after request freed.");
+                /* An error after freeing the request MUST be fatal
+                 * MPI3 ch3.7: MPI_REQUEST_FREE */
+                ompi_mpi_errors_are_fatal_comm_handler(NULL, MPI_ERR_REQUEST, "Recv error after request freed");
             }
             MCA_PML_OB1_RECV_REQUEST_RETURN(recvreq);
         } else {

ompi/mca/pml/ob1/pml_ob1_sendreq.h

@@ -276,7 +276,9 @@ send_request_pml_complete(mca_pml_ob1_send_request_t *sendreq)
                 MCA_PML_OB1_SEND_REQUEST_MPI_COMPLETE(sendreq, true);
             } else {
                 if( MPI_SUCCESS != sendreq->req_send.req_base.req_ompi.req_status.MPI_ERROR ) {
-                    OMPI_ERRHANDLER_NOHANDLE_INVOKE(MPI_ERR_REQUEST, "Send error after request freed");
+                    /* An error after freeing the request MUST be fatal
+                     * MPI3 ch3.7: MPI_REQUEST_FREE */
+                    ompi_mpi_errors_are_fatal_comm_handler(NULL, MPI_ERR_REQUEST, "Send error after request freed");
                 }
             }
         } else {