Add additional check mRuntimeSmbiosEntryPoint == NULL to avoid K9 error.

Signed-off-by: Elvin Li <elvin.li@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>



git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/IntelFrameworkModulePkg@14962 6f19259b-4bc3-4df7-8a09-765794883524