prevent crash during timer expiration after stream is closed (argopro…

…j#19917)

Reorder ticker stop and close merge to prevent send(true) happens after merge is closed, in rare situation when the timer expires exactly at the point between close(merge) and ticker.Stop()

Signed-off-by: morapet <[email protected]>

server/application/logs.go

@@ -144,8 +144,8 @@ func mergeLogStreams(streams []chan logEntry, bufferingDuration time.Duration) c
 
 		_ = send(true)
 
-		close(merged)
 		ticker.Stop()
+		close(merged)
 	}()
 	return merged
 }