Null driver fails on Debian Wheezy (with backports) which uses GCC 4.7
== Build lib/librte_pmd_null CC rte_eth_null.o /home/shemminger/src/dpdk/lib/librte_pmd_null/rte_eth_null.c: In function ?eth_stats_get?: /home/shemminger/src/dpdk/lib/librte_pmd_null/rte_eth_null.c:302:28: error: array subscript is above array bounds [-Werror=array-bounds] /home/shemminger/src/dpdk/lib/librte_pmd_null/rte_eth_null.c:302:28: error: array subscript is above array bounds [-Werror=array-bounds] /home/shemminger/src/dpdk/lib/librte_pmd_null/rte_eth_null.c:302:28: error: array subscript is above array bounds [-Werror=array-bounds]
