fix for compilers that enable pie by default
fix for compilers that enable pie by default

ntop/PF_RING,ntop/PF_RING,ntop/PF_RING,opencTM/PF_RING,ntop/PF_RING,ntop/PF_RING,ntop/PF_RING,ntop/PF_RING,opencTM/PF_RING,opencTM/PF_RING,opencTM/PF_RING