fix: real-bidder panic

p2p/integrationtest/real-bidder/main.go

@@ -224,25 +224,21 @@ func main() {
 					continue
 				}
 
-				bundleLen := rand.Intn(10)
-				bundleStart := rand.Intn(len(currentBlock.txns) - 1)
-				bundleEnd := bundleStart + bundleLen
-				if bundleEnd > len(currentBlock.txns) {
-					bundleEnd = len(currentBlock.txns) - 1
-				}
+				bundleStart := rand.Intn(len(currentBlock.txns))
+				bundleEnd := min(bundleStart+rand.Intn(10), len(currentBlock.txns)-1)
+
+				const dMin, dMax = 5000, 10000
+				startTimeDiff := rand.Int63n(dMax-dMin+1) + dMin
+				endTimeDiff := rand.Int63n(dMax-dMin+1) + dMin
 
-				min := 5000
-				max := 10000
-				startTimeDiff := rand.Intn(max-min+1) + min
-				endTimeDiff := rand.Intn(max-min+1) + min
 				err = sendBid(
 					bidderClient,
 					logger,
 					rpcClient,
 					currentBlock.txns[bundleStart:bundleEnd],
 					currentBlock.blockNum,
-					(time.Now().UnixMilli())-int64(startTimeDiff),
-					(time.Now().UnixMilli())+int64(endTimeDiff),
+					time.Now().UnixMilli()-startTimeDiff,
+					time.Now().UnixMilli()+endTimeDiff,
 				)
 				if err != nil {
 					logger.Error("failed to send bid", "err", err)