From a2d679c76f44904497117cc44cfb5c4d9fa5c248 Mon Sep 17 00:00:00 2001
From: Kaspar Schleiser <kaspar@schleiser.de>
Date: Wed, 16 Jan 2019 15:38:20 +0100
Subject: [PATCH] gnrc/pktbuf: avoid memcpy if size <= 0

---
 sys/net/gnrc/pktbuf_static/gnrc_pktbuf_static.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sys/net/gnrc/pktbuf_static/gnrc_pktbuf_static.c b/sys/net/gnrc/pktbuf_static/gnrc_pktbuf_static.c
index eba560abb7..86402bfdf0 100644
--- a/sys/net/gnrc/pktbuf_static/gnrc_pktbuf_static.c
+++ b/sys/net/gnrc/pktbuf_static/gnrc_pktbuf_static.c
@@ -380,11 +380,11 @@ static gnrc_pktsnip_t *_create_snip(gnrc_pktsnip_t *next, const void *data, size
             _pktbuf_free(pkt, sizeof(gnrc_pktsnip_t));
             return NULL;
         }
+        if (data != NULL) {
+            memcpy(_data, data, size);
+        }
     }
     _set_pktsnip(pkt, next, _data, size, type);
-    if (data != NULL) {
-        memcpy(_data, data, size);
-    }
     return pkt;
 }