integration: validate expected online status in ping

Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>

integration/hsic/hsic.go

@@ -664,6 +664,7 @@ func extractTarToDirectory(tarData []byte, targetDir string) error {
 			// Skip the top-level directory itself
 			continue
 		}
+
 		// Skip empty paths after stripping
 		if cleanName == "" {
 			continue
@@ -682,6 +683,7 @@ func extractTarToDirectory(tarData []byte, targetDir string) error {
 			if err := os.MkdirAll(filepath.Dir(targetPath), 0o755); err != nil {
 				return fmt.Errorf("failed to create parent directories for %s: %w", targetPath, err)
 			}
+
 			// Create file
 			outFile, err := os.Create(targetPath)
 			if err != nil {