consensus/parlia: exclude inturn validator when calculate backoffTime (…

…#2618)

consensus/parlia/parlia.go

@@ -2029,12 +2029,17 @@ func (p *Parlia) backOffTime(snap *Snapshot, header *types.Header, val common.Ad
 				delay = 0
 			}
 
-			// Exclude the recently signed validators
+			// Exclude the recently signed validators and the in turn validator
 			temp := make([]common.Address, 0, len(validators))
 			for _, addr := range validators {
 				if snap.signRecentlyByCounts(addr, counts) {
 					continue
 				}
+				if p.chainConfig.IsBohr(header.Number, header.Time) {
+					if addr == inTurnAddr {
+						continue
+					}
+				}
 				temp = append(temp, addr)
 			}
 			validators = temp