fix dumpSqls is nil

liuxiaolong

2020-05-14 f415b40162623cef084caf6c18ed3e595a5c6373

fix dumpSqls is nil

 sync.go

@@ -153,10 +153,11 @@
    }

    dumpSqls, err := agent.GetTableDataFromCluster(syncTables)
    fmt.Println("len(dumpSqls):", len(*dumpSqls), "err:",err)
    if dumpSqls != nil && len(*dumpSqls) > 0 {
        fmt.Println("len(dumpSqls):", len(*dumpSqls), "err:", err)
        sqls = append(sqls, *dumpSqls)
    } else {
        fmt.Println("dumpSqls is nil, err:", err)
        return false
    }