[PATCH v3 4/4] gattrib: Fix passing NULL to memcpy

From: Luiz Augusto von Dentz <redacted>

This fixes the following runtime error:

  attrib/gattrib.c:198:2: runtime error: null pointer passed as
  argument 2, which is declared to never be null
---
 attrib/gattrib.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/attrib/gattrib.c b/attrib/gattrib.c
index 270a37ebe..041b9d289 100644
--- a/attrib/gattrib.c
+++ b/attrib/gattrib.c

@@ -195,7 +195,9 @@ static uint8_t *construct_full_pdu(uint8_t opcode, const void *pdu,
 		return NULL;
 
 	buf[0] = opcode;
-	memcpy(buf + 1, pdu, length);
+
+	if (pdu && length)
+		memcpy(buf + 1, pdu, length);
 
 	return buf;
 }

-- 
2.33.1