Add sql.sort = True for a non-uniq index test in big/tree_pk.test

test/big/tree_pk.result

@@ -263,8 +263,8 @@ select * from t22 WHERE k2 = 0
 Found 4 tuples:
 [0, 0, 0, 0]
 [4, 4, 0, 4]
-[6, 6, 0, 6]
 [5, 5, 0, 5]
+[6, 6, 0, 6]
 delete from t22 WHERE k0 = 5
 Delete OK, 1 row affected
 select * from t22 WHERE k2 = 0

test/big/tree_pk.test

@@ -159,6 +159,7 @@ exec sql "select * from t22 WHERE k2 = 10"
 exec sql "select * from t22 WHERE k3 = 10"
 exec sql "select * from t22 WHERE k3 = 0"
 
+sql.sort = True
 # Non-Uniq test (key #2)
 exec sql "insert into t22 values (4, 4, 0, 4)"
 exec sql "insert into t22 values (5, 5, 0, 5)"
@@ -167,6 +168,7 @@ exec sql "replace into t22 values (5, 5, 0, 5)"
 exec sql "select * from t22 WHERE k2 = 0"
 exec sql "delete from t22 WHERE k0 = 5"
 exec sql "select * from t22 WHERE k2 = 0"
+sql.sort = False
 
 exec admin "lua box.space[22]:truncate()"