coverage: fellow_cache_obj_lru_touch()

src/fellow_cache.c

@@ -5563,6 +5563,7 @@ static void test_fellow_cache_obj_iter_final(
 			usleep(100);
 		assert(fcs->state == FCS_INCORE);
 		AZ(fcs->refcnt);
+		AN(fcs->fcs_onlru);
 	} else
 		WRONG("no seg");
 	fellow_cache_obj_slim(fc, *fcop);
@@ -6087,6 +6088,7 @@ t_cache(unsigned chksum)
 	}
 	fellow_busy_obj_trimstore(fbo);
 	test_bocdone(fbo, TRUST_ME(hash), 1);
+	(void)fellow_cache_obj_lru_touch(fco);
 	fellow_cache_obj_deref(fc, fco);
 
 	// === alloc space error inject