wireshark: fix guint64 print format handling

Use G_GUINT64_FORMAT to handle print format of guint64 correctly.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
wireshark: fix indention

Fix indention.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>