From 87a31ba0390f7c4c7af34544a7baf5a975e0b61d Mon Sep 17 00:00:00 2001
From: Mithil Poojary <mithil467@gmail.com>
Date: Sat, 3 Oct 2020 03:21:38 +0530
Subject: [PATCH] Avoid passing null pointer to strncpy

---
 src/mboxscan.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/mboxscan.cc b/src/mboxscan.cc
index 26f2f11b..d90cdce0 100644
--- a/src/mboxscan.cc
+++ b/src/mboxscan.cc
@@ -131,7 +131,9 @@ static void mbox_scan(char *args, char *output, size_t max_len) {
         tmp = strtok(nullptr, " ");
         if (tmp != nullptr) { start = tmp; }
       }
-      strncpy(mbox_mail_spool, start, DEFAULT_TEXT_BUFFER_SIZE);
+      if (start != nullptr) {
+        strncpy(mbox_mail_spool, start, DEFAULT_TEXT_BUFFER_SIZE);
+      }
       free(copy_args);
     }
     if (strlen(mbox_mail_spool) < 1) {