REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3819 Ping GetTimerPeriod API returns sometime zero value when StallCounter has smaller value than RttTimerTick (divide by zero) which results some failure at ping UEFI shell command Signed-off-by: MohammedX Rehan <mohammedx.rehan@intel.com> Reviewed-by: Zhichao Gao <zhichao.gao@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com>