unittests: don't call memcpy on NULL-ptr

diff --git a/src/util-unittest-helper.c b/src/util-unittest-helper.c
index 94756e7a6ccf3af88686259911c9b51407e86ecf..dd2c20dc9c08b59ca61e5300147b907f84632612 100644 (file)
--- a/src/util-unittest-helper.c
+++ b/src/util-unittest-helper.c
@@ -233,7 +233,9 @@ Packet *UTHBuildPacketReal(uint8_t *payload, uint16_t payload_len,
         /* TODO: Add more protocols */
     }
 
-    PacketCopyDataOffset(p, hdr_offset, payload, payload_len);
+    if (payload && payload_len) {
+        PacketCopyDataOffset(p, hdr_offset, payload, payload_len);
+    }
     SET_PKT_LEN(p, hdr_offset + payload_len);
     p->payload = GET_PKT_DATA(p)+hdr_offset;