pipeline: fix unused variable
pipeline: fix unused variable

Coverity issue: 362855
Fixes: 75634474ca ("pipeline: add SWX instruction verifier")

Signed-off-by: Cristian Dumitrescu <25468b8a3698eeb3c368247f8635924bb4a1ce2c@intel.com>

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