igb_uio: fix build with kernel older than 2.6.34
igb_uio: fix build with kernel older than 2.6.34

There was a missing brace in commit 819fc2fe2ad99
(dont wrap pci_num_vf function needlessly).

Signed-off-by: Thomas Monjalon <ee2fa8b2681c737f775687e475dcbf2028a412f1@6wind.com>

venkynv/dpdk-mirror,tsphillips/dpdk-fork,venkynv/dpdk-mirror,mixja/dpdk,john-mcnamara-intel/dpdk,msune/dpdk,msune/dpdk,msune/dpdk,john-mcnamara-intel/dpdk,venkynv/dpdk-mirror,mixja/dpdk,msune/dpdk,john-mcnamara-intel/dpdk,tsphillips/dpdk-fork,mixja/dpdk,tsphillips/dpdk-fork,john-mcnamara-intel/dpdk,tsphillips/dpdk-fork,mixja/dpdk,venkynv/dpdk-mirror