Port to new UDB2 protocol

bench/udb2/test-mlib.c

@@ -14,7 +14,7 @@ DICT_OA_DEF2(dict_oa_uint,
 	     unsigned int, M_OPEXTEND(M_DEFAULT_OPLIST, OOR_EQUAL(oor_equal_p), OOR_SET(oor_set M_IPTR)),
 	     unsigned int, M_DEFAULT_OPLIST)
 
-void test_int(uint32_t n, uint32_t x0)
+uint32_t test_int(uint32_t n, uint32_t x0)
 {
   uint32_t i, x, z = 0;
   dict_oa_uint_t h;
@@ -27,5 +27,7 @@ void test_int(uint32_t n, uint32_t x0)
     z += *ptr;
   }
   fprintf(stderr, "# unique keys: %d; checksum: %u\n", (int) dict_oa_uint_size(h), z);
+  z = dict_oa_uint_size(h);
   dict_oa_uint_clear(h);
+  return z;
 }