Fix breakage in txn_correctness_test.
Fix breakage in txn_correctness_test.

paperstreet/cockroach,petermattis/cockroach,sunya123/cockroach,veteranlu/cockroach,vivekmenezes/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,maxlang/cockroach,vivekmenezes/cockroach,veteranlu/cockroach,cockroachdb/cockroach,petermattis/cockroach,glycerine/cockroach,cockroachdb/cockroach,veteranlu/cockroach,vaibhavarora/cockroach,maxlang/cockroach,maxlang/cockroach,vivekmenezes/cockroach,petermattis/cockroach,paperstreet/cockroach,sunya123/cockroach,paperstreet/cockroach,maxlang/cockroach,glycerine/cockroach,vaibhavarora/cockroach,paperstreet/cockroach,arjun4084346/cockroach,arjun4084346/cockroach,petermattis/cockroach,glycerine/cockroach,petermattis/cockroach,glycerine/cockroach,maxlang/cockroach,sunya123/cockroach,cockroachdb/cockroach,glycerine/cockroach,vaibhavarora/cockroach,sunya123/cockroach,paperstreet/cockroach,arjun4084346/cockroach,veteranlu/cockroach,glycerine/cockroach,maxlang/cockroach,sunya123/cockroach,veteranlu/cockroach,cockroachdb/cockroach,petermattis/cockroach,paperstreet/cockroach,arjun4084346/cockroach,maxlang/cockroach,veteranlu/cockroach,cockroachdb/cockroach,veteranlu/cockroach,vaibhavarora/cockroach,cockroachdb/cockroach,sunya123/cockroach,glycerine/cockroach,vivekmenezes/cockroach,arjun4084346/cockroach,vivekmenezes/cockroach,arjun4084346/cockroach,veteranlu/cockroach,paperstreet/cockroach,maxlang/cockroach,cockroachdb/cockroach,vaibhavarora/cockroach,sunya123/cockroach,sunya123/cockroach,vivekmenezes/cockroach,paperstreet/cockroach,petermattis/cockroach,arjun4084346/cockroach,vivekmenezes/cockroach,vivekmenezes/cockroach,cockroachdb/cockroach,vaibhavarora/cockroach,petermattis/cockroach,arjun4084346/cockroach,glycerine/cockroach