From c76f59bcc0b4c1a14caa7028e034ab44d3e1b4a8 Mon Sep 17 00:00:00 2001
From: Guido Falsi <mad@madpilot.net>
Date: Sat, 29 Sep 2018 16:15:42 +0200
Subject: Avoid passing NULL to vprintf().


diff --git a/lib/utils_base.c b/lib/utils_base.c
index 3822bcf..19a531f 100644
--- a/lib/utils_base.c
+++ b/lib/utils_base.c
@@ -87,10 +87,13 @@ void _get_monitoring_plugin( monitoring_plugin **pointer ){
 void
 die (int result, const char *fmt, ...)
 {
-	va_list ap;
-	va_start (ap, fmt);
-	vprintf (fmt, ap);
-	va_end (ap);
+	if(fmt!=NULL) {
+		va_list ap;
+		va_start (ap, fmt);
+		vprintf (fmt, ap);
+		va_end (ap);
+	}
+
 	if(this_monitoring_plugin!=NULL) {
 		np_cleanup();
 	}
-- 
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