don't mix mallocators closes[t:2204]

git-svn-id: file:///svn/toku/tokudb@15999 c7de825b-a66e-492c-adef-691d508d4ae1

src/tests/test_set_func_malloc.c

@@ -88,6 +88,10 @@ test1 (void)
 	x = toku_realloc(x, 6);        assert(x);
 	toku_free(x);
     }
+    r = db_env_set_func_malloc(NULL);   assert(r==0);
+    r = db_env_set_func_realloc(NULL);  assert(r==0);
+    r = db_env_set_func_free(NULL);     assert(r==0);
+
 #endif
 }