message: Make packet argument optional in generate()

diff --git a/src/libcharon/encoding/message.c b/src/libcharon/encoding/message.c
index 435b98205210776d4fe93076ff224ff36a201d01..44221b6aeca67012eca1244c39f314a01c13267c 100644 (file)
--- a/src/libcharon/encoding/message.c
+++ b/src/libcharon/encoding/message.c
@@ -1650,7 +1650,10 @@ METHOD(message_t, generate, status_t,
                }
        }
        generator->destroy(generator);
-       *packet = this->packet->clone(this->packet);
+       if (packet)
+       {
+               *packet = this->packet->clone(this->packet);
+       }
        return SUCCESS;
 }