net/i40e: fix parsing QinQ pattern
net/i40e: fix parsing QinQ pattern

Add check if o_vlan_mask and i_vlan_mask are not a NULL pointer.

Coverity issue: 143448
Coverity issue: 143449
Fixes: d37705068ee8 ("net/i40e: parse QinQ pattern")
Cc: stable@dpdk.org

Signed-off-by: Kuba Kozak <67670b66df7eb69a86e2579475d68b34f383c70c@intel.com>
Acked-by: Jingjing Wu <64d28b617c3b4840f5ded1bfa611cba7fadfe5c7@intel.com>

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