added comment to make clear that leaving the variable analytics outside of the…

added comment to make clear that leaving the variable analytics outside of the feature flag block is intentional

lms/templates/widgets/segment-io.html

 <!-- begin Segment.io -->
 <script type="text/javascript">
+  // Leaving this line out of the feature flag block is intentional. Pulling the line outside of the if statement allows it to serve as its own dummy object.
   var analytics=analytics||[];analytics.load=function(e){var t=document.createElement("script");t.type="text/javascript",t.async=!0,t.src=("https:"===document.location.protocol?"https://":"http://")+"d2dq2ahtl5zl1z.cloudfront.net/analytics.js/v1/"+e+"/analytics.min.js";var n=document.getElementsByTagName("script")[0];n.parentNode.insertBefore(t,n);var r=function(e){return function(){analytics.push([e].concat(Array.prototype.slice.call(arguments,0)))}},i=["identify","track","trackLink","trackForm","trackClick","trackSubmit","pageview","ab","alias","ready"];for(var s=0;s<i.length;s++)analytics[i[s]]=r(i[s])};
 
 % if settings.MITX_FEATURES.get('SEGMENT_IO_LMS'):