fix submit block on same height bug (#575)

diff --git a/mining/miningpool/minepool.go b/mining/miningpool/minepool.go
index 98415cc..823a515 100644 (file)
--- a/mining/miningpool/minepool.go
+++ b/mining/miningpool/minepool.go
@@ -59,7 +59,7 @@ func (m *MiningPool) blockUpdater() {
 
                case submitMsg := <-m.submitCh:
                        err := m.submitWork(submitMsg.blockHeader)
-                       if err != nil {
+                       if err == nil {
                                m.generateBlock()
                        }
                        submitMsg.reply <- err