packet1: Don't free an invalid address.

src/packet1.c

@@ -158,7 +158,6 @@ int ssh_packet_socket_callback1(const void *data, size_t receivedlen, void *user
       packet = (char *)data + processed;
 
       if (buffer_add_data(session->in_buffer,packet,to_be_read) < 0) {
-        SAFE_FREE(packet);
         goto error;
       }
       processed += to_be_read;