fix memory leaks

object-test/arrays.c

@@ -15,5 +15,6 @@ int main(void)
 		printf("object %p\n", it.value);
 	}
 
+	b_array_release(array);
 	return 0;
 }

object-test/numbers.c

@@ -6,5 +6,6 @@ int main(void)
 	b_number *number = b_number_create_float(6.8);
 
 	printf("number=%zd\n", B_NUMBER_IVAL(number));
+	b_number_release(number);
 	return 0;
 }

object-test/trees.c

@@ -112,5 +112,8 @@ int main(void)
 		printf("%d\n", item->value);
 	}
 
+	b_tree_release(tree);
+	b_dict_release(dict);
+
 	return 0;
 }

object-test/uuids.c

@@ -8,5 +8,7 @@ int main(void)
 	char str[B_UUID_STRING_MAX];
 	b_uuid_to_cstr(uuid, str);
 	printf("%s\n", str);
+
+	b_uuid_release(uuid);
 	return 0;
 }