Fixed missing variable reference

Author: djanelle-mit

app/assets/stylesheets/partials/_search.scss

@@ -274,7 +274,7 @@
     margin-bottom: 16px;
   }
 
-  p {line-height: $lh-loose;}
+  p {line-height: $lh-xloose;}
 
   a {
     @include underlinedLinks;