Chore: Check errors from Close calls (#29562)

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

pkg/components/imguploader/azureblobuploader.go

@@ -49,7 +49,11 @@ func (az *AzureBlobUploader) Upload(ctx context.Context, imageDiskPath string) (
 	if err != nil {
 		return "", err
 	}
-	defer file.Close()
+	defer func() {
+		if err := file.Close(); err != nil {
+			az.log.Warn("Failed to close file", "path", imageDiskPath, "err", err)
+		}
+	}()
 
 	randomFileName, err := util.GetRandomString(30)
 	if err != nil {

pkg/components/imguploader/gcs/gcsuploader.go

@@ -153,7 +153,11 @@ func (u *Uploader) uploadFile(
 	if err != nil {
 		return err
 	}
-	defer fileReader.Close()
+	defer func() {
+		if err := fileReader.Close(); err != nil {
+			u.log.Warn("Failed to close file", "err", err, "path", imageDiskPath)
+		}
+	}()
 
 	// Set public access if not generating a signed URL
 	pubAcc := !u.enableSignedURLs

pkg/components/imguploader/s3uploader.go

@@ -80,12 +80,17 @@ func (u *S3Uploader) Upload(ctx context.Context, imageDiskPath string) (string,
 	if err != nil {
 		return "", err
 	}
-	defer file.Close()
+	defer func() {
+		if err := file.Close(); err != nil {
+			u.log.Warn("Failed to close file", "path", imageDiskPath, "err", err)
+		}
+	}()
 
 	sess, err = session.NewSession(cfg)
 	if err != nil {
 		return "", err
 	}
+
 	uploader := s3manager.NewUploader(sess)
 	result, err := uploader.UploadWithContext(ctx, &s3manager.UploadInput{
 		Bucket:      aws.String(u.bucket),