Fix insertion of non hex encoded payload data

src/conftest/hooks/add_notify.c

@@ -85,7 +85,7 @@ METHOD(listener_t, message, bool,
 			data = chunk_skip(chunk_create(this->data, strlen(this->data)), 2);
 			data = chunk_from_hex(data, NULL);
 		}
-		else if (data.len)
+		else if (this->data && strlen(this->data))
 		{
 			data = chunk_clone(chunk_create(this->data, strlen(this->data)));
 		}

src/conftest/hooks/add_payload.c

@@ -82,7 +82,7 @@ METHOD(listener_t, message, bool,
 			data = chunk_skip(chunk_create(this->data, strlen(this->data)), 2);
 			data = chunk_from_hex(data, NULL);
 		}
-		else if (data.len)
+		else if (this->data && strlen(this->data))
 		{
 			data = chunk_clone(chunk_create(this->data, strlen(this->data)));
 		}

src/conftest/hooks/unencrypted_notify.c

@@ -80,7 +80,7 @@ METHOD(listener_t, ike_updown, bool,
 			data = chunk_skip(chunk_create(this->data, strlen(this->data)), 2);
 			data = chunk_from_hex(data, NULL);
 		}
-		else if (data.len)
+		else if (this->data && strlen(this->data))
 		{
 			data = chunk_clone(chunk_create(this->data, strlen(this->data)));
 		}