From 17fcdcdcb04e68fa9c01a4038f53a31623b45b80 Mon Sep 17 00:00:00 2001
From: Nathan Moinvaziri <nathan@solidstatenetworks.com>
Date: Thu, 26 Oct 2017 08:13:13 -0700
Subject: [PATCH] Check for null return value from localtime.

---
 src/mz_zip.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/mz_zip.c b/src/mz_zip.c
index c8a93cc..7cbf60c 100755
--- a/src/mz_zip.c
+++ b/src/mz_zip.c
@@ -1553,10 +1553,13 @@ time_t mz_zip_dosdate_to_time_t(uint64_t dos_date)
 
 int32_t mz_zip_time_t_to_tm(time_t unix_time, struct tm *ptm)
 {
+    struct tm *ltm = NULL;
     if (ptm == NULL)
         return MZ_PARAM_ERROR;
-
-    memcpy(ptm, localtime(&unix_time), sizeof(struct tm));
+    ltm = localtime(&unix_time);
+    if (ltm == NULL)
+        return MZ_INTERNAL_ERROR;
+    memcpy(ptm, ltm, sizeof(struct tm));
     return MZ_OK;
 }