From a3ca94f833c16a623a494f3d197955e4c06a490a Mon Sep 17 00:00:00 2001
From: Zach DeVito <zdevito@fb.com>
Date: Thu, 29 Nov 2018 16:56:13 -0800
Subject: [PATCH] guard memcpy when n == 0 because buffer may be NULL

---
 miniz_zip.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/miniz_zip.c b/miniz_zip.c
index f42a9ea..7e6bd8f 100644
--- a/miniz_zip.c
+++ b/miniz_zip.c
@@ -351,7 +351,8 @@ static MZ_FORCEINLINE mz_bool mz_zip_array_push_back(mz_zip_archive *pZip, mz_zi
     size_t orig_size = pArray->m_size;
     if (!mz_zip_array_resize(pZip, pArray, orig_size + n, MZ_TRUE))
         return MZ_FALSE;
-    memcpy((mz_uint8 *)pArray->m_p + orig_size * pArray->m_element_size, pElements, n * pArray->m_element_size);
+    if (n > 0)
+        memcpy((mz_uint8 *)pArray->m_p + orig_size * pArray->m_element_size, pElements, n * pArray->m_element_size);
     return MZ_TRUE;
 }