wireshark: security bump to version 1.8.7

Fixes CVE-2013-2486, CVE-2013-2487 and several wnpa-sec (wireshark)
advisories.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>