sbft: do not backlog view change and new view messages

Change-Id: I5cebee6a9a1c86589700bef16700d249ed92d307
Signed-off-by: Simon Schubert <[email protected]>

Author: corecode

orderer/sbft/simplebft/simplebft.go

@@ -192,6 +192,12 @@ func (s *SBFT) Receive(m *Msg, src uint64) {
 	} else if req := m.GetRequest(); req != nil {
 		s.handleRequest(req, src)
 		return
+	} else if vs := m.GetViewChange(); vs != nil {
+		s.handleViewChange(vs, src)
+		return
+	} else if nv := m.GetNewView(); nv != nil {
+		s.handleNewView(nv, src)
+		return
 	}
 
 	if s.testBacklog(m, src) {
@@ -216,12 +222,6 @@ func (s *SBFT) handleQueueableMessage(m *Msg, src uint64) {
 	} else if c := m.GetCheckpoint(); c != nil {
 		s.handleCheckpoint(c, src)
 		return
-	} else if vs := m.GetViewChange(); vs != nil {
-		s.handleViewChange(vs, src)
-		return
-	} else if nv := m.GetNewView(); nv != nil {
-		s.handleNewView(nv, src)
-		return
 	}
 
 	log.Warningf("received invalid message from %d", src)