Fix bug when adding invalid custom certs

Author: jc21

backend/internal/certificate.js

@@ -660,8 +660,8 @@ const internalCertificate = {
 	 * @param {Boolean} [throwExpired]  Throw when the certificate is out of date
 	 */
 	getCertificateInfo: async (certificate, throwExpired) => {
+		const filepath = await tempWrite(certificate, "/tmp");
 		try {
-			const filepath = await tempWrite(certificate, "/tmp");
 			const certData = await internalCertificate.getCertificateInfoFromFile(filepath, throwExpired);
 			fs.unlinkSync(filepath);
 			return certData;