Fix errcheck and ineffassign lint errors

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

pkg/agent/tools/browser/download_pdf.go

@@ -95,7 +95,7 @@ func DownloadPDFTool() agent.Tool {
 					ErrorDetail: fmt.Sprintf("cannot create temp dir: %s", err),
 				}), nil
 			}
-			defer os.RemoveAll(tmpDir)
+			defer func() { _ = os.RemoveAll(tmpDir) }()
 
 			tmpFile := filepath.Join(tmpDir, "input.pdf")
 			if err := os.WriteFile(tmpFile, body, 0o600); err != nil {

pkg/agent/tools/browser/fetch_sitemap.go

@@ -92,7 +92,7 @@ func FetchSitemapTool() agent.Tool {
 						ErrorDetail: fmt.Sprintf("cannot decompress gzipped sitemap: %s", err),
 					}), nil
 				}
-				defer gz.Close()
+				defer func() { _ = gz.Close() }()
 				reader = gz
 			}
 

pkg/agent/tools/security/whois.go

@@ -130,7 +130,7 @@ func queryWhois(ctx context.Context, server, domain string) (string, error) {
 	if err != nil {
 		return "", fmt.Errorf("cannot connect to %s: %w", server, err)
 	}
-	defer conn.Close()
+	defer func() { _ = conn.Close() }()
 
 	_ = conn.SetDeadline(time.Now().Add(10 * time.Second))