fix err is nil

dtmcli/dtmimp/utils.go

@@ -253,6 +253,7 @@ func RespAsErrorByJSONRPC(resp *resty.Response) error {
 // DeferDo a common defer do used in dtmcli/dtmgrpc
 func DeferDo(rerr *error, success func() error, fail func() error) {
 	if x := recover(); x != nil {
+		*rerr = AsError(x)
 		_ = fail()
 		panic(x)
 	} else if *rerr != nil {

dtmcli/tcc.go

@@ -41,7 +41,9 @@ func TccGlobalTransaction2(dtm string, gid string, custom func(*Tcc), tccFunc Tc
 	defer dtmimp.DeferDo(&rerr, func() error {
 		return dtmimp.TransCallDtm(&tcc.TransBase, tcc, "submit")
 	}, func() error {
-		tcc.RollbackReason = rerr.Error()
+		if rerr != nil {
+			tcc.RollbackReason = rerr.Error()
+		}
 		return dtmimp.TransCallDtm(&tcc.TransBase, tcc, "abort")
 	})
 	_, rerr = tccFunc(tcc)