[monitoring-plugins] Fix initialisation on old compilers

[Lorenz Kästle]

 Module: monitoring-plugins
 Branch: master
 Commit: 034d4ee15840550dac4a57b41f5b60732ca1df6b
 Author: Lorenz Kästle <12514511+RincewindsHat at users.noreply.github.com>
   Date: Sat Nov  8 00:59:46 2025 +0100
    URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=034d4ee1

Fix initialisation on old compilers

---

 plugins/sslutils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/sslutils.c b/plugins/sslutils.c
index c1d15534..c58a35ab 100644
--- a/plugins/sslutils.c
+++ b/plugins/sslutils.c
@@ -316,7 +316,7 @@ retrieve_expiration_time_result np_net_ssl_get_cert_expiration(X509 *certificate
 #	ifdef USE_OPENSSL
 	retrieve_expiration_time_result result = {
 		.errors = ALL_OK,
-		.remaining_seconds = {},
+		.remaining_seconds = 0,
 	};
 
 	if (!certificate) {