wireshark: security bump to version 1.12.4

Fixes:
CVE-2015-2187 - The ATN-CPDLC dissector could crash.
CVE-2015-2188 - The WCP dissector could crash.
CVE-2015-2189 - The pcapng file parser could crash.
CVE-2015-2190 - The LLDP dissector could crash.
CVE-2015-2191 - The TNEF dissector could go into an infinite loop.
CVE-2015-2192 - The SCSI OSD dissector could go into an infinite loop.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>