51029af4d7
If this polling group is not initialized, we do not need to destroy the polling group. Change-Id: I5a94412d7f42b05d4a457c8652e2f465190fbe6e Signed-off-by: Ziye Yang <optimistyzy@gmail.com> Reviewed-on: https://review.gerrithub.io/401362 Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: Jim Harris <james.r.harris@intel.com>