net/softnic: fix meter policies initialization
net/softnic: fix meter policies initialization

Initialize meter policy list before use to avoid segment fault

Fixes: 0d73ddf25faa ("net/softnic: add meter profile")
Cc: stable@dpdk.org

Signed-off-by: Dapeng Yu <2ae0fa8a635a8d49fd7130e63fbc0ccef25ba993@intel.com>
Acked-by: Cristian Dumitrescu <25468b8a3698eeb3c368247f8635924bb4a1ce2c@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk