Fix the x64 builds after the commit:b3b1f7c3aa2233a147294bad833b748d38fba84d
From Change: 2803

Change-Id: Ic57fb0e3c1e0450561aebe48a873a3fdb2e8e105
Reviewed-on: https://code.wireshark.org/review/3014
Reviewed-by: Graham Bloice <graham.bloice@trihedral.com>