fixed lint errors

hack/jenkins/test-flake-chart/process_last_90/process_last_90.go

@@ -40,13 +40,11 @@ func main() {
 	if err != nil {
 		log.Fatalf("failed opening source file %q: %v", *dataFile, err)
 	}
-	defer data.Close()
 
 	dataLast90, err := os.OpenFile(*dataLast90File, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
 	if err != nil {
 		log.Fatalf("failed creating target file %q: %v", *dataLast90File, err)
 	}
-	defer dataLast90.Close()
 
 	dw := bufio.NewWriter(dataLast90)
 
@@ -95,6 +93,12 @@ func main() {
 	if err := s.Err(); err != nil {
 		log.Fatalf("scanner had an error: %v", err)
 	}
+	if err := data.Close(); err != nil {
+		log.Fatalf("failed to close source file: %v", err)
+	}
+	if err := dataLast90.Close(); err != nil {
+		log.Fatalf("failed to close target file: %v", err)
+	}
 }
 
 func write(dw *bufio.Writer, line string) {

hack/jenkins/test-flake-chart/process_last_90/process_last_90.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
-# Copyright 2021 The Kubernetes Authors All rights reserved.
-#   
+# Copyright 2022 The Kubernetes Authors All rights reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at