From b1dbb99f5c58a006ab1ec129a3452da89bfe08a0 Mon Sep 17 00:00:00 2001
From: Dragos Oancea <dragos@signalwire.com>
Date: Thu, 30 Jan 2020 21:56:44 +0000
Subject: [PATCH] [core] scan-build: Null pointer passed as an argument to a
 'nonnull' parameter - switch_event_base_add_header()

---
 src/switch_event.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/switch_event.c b/src/switch_event.c
index 8b8d57250c..c2b03b54a7 100644
--- a/src/switch_event.c
+++ b/src/switch_event.c
@@ -1114,7 +1114,11 @@ static switch_status_t switch_event_base_add_header(switch_event_t *event, switc
 	redraw:
 		len = 0;
 		for(j = 0; j < header->idx; j++) {
-			len += strlen(header->array[j]) + 2;
+			len += 2;
+			if (!header->array[j]) { 
+				continue;
+			}
+			len += strlen(header->array[j]);
 		}
 
 		if (len) {