Always OBJ_DESTRUCT the send request.

ompi/mca/pml/ob1/pml_ob1_isend.c

@@ -234,14 +234,12 @@ int mca_pml_ob1_send(void *buf,
                              PERUSE_SEND);
 
     MCA_PML_OB1_SEND_REQUEST_START_W_SEQ(sendreq, endpoint, seqn, rc);
-    if (rc != OMPI_SUCCESS) {
-        return rc;
-    }
-
+    if (OPAL_UNLIKELY(rc == OMPI_SUCCESS)) {
         ompi_request_wait_completion(&sendreq->req_send.req_base.req_ompi);
 
         rc = sendreq->req_send.req_base.req_ompi.req_status.MPI_ERROR;
         MCA_PML_BASE_SEND_REQUEST_FINI(&sendreq->req_send);
+    }
     OBJ_DESTRUCT(sendreq);
 
     return rc;