Trim trailing whitespace.

lib/less/tree/anonymous.js

@@ -8,21 +8,21 @@ tree.Anonymous = function (string, index, currentFileInfo, mapLines) {
 };
 tree.Anonymous.prototype = {
     type: "Anonymous",
-    eval: function () { 
+    eval: function () {
         return new tree.Anonymous(this.value, this.index, this.currentFileInfo, this.mapLines);
     },
     compare: function (x) {
         if (!x.toCSS) {
             return -1;
         }
-        
+
         var left = this.toCSS(),
             right = x.toCSS();
-        
+
         if (left === right) {
             return 0;
         }
-        
+
         return left < right ? -1 : 1;
     },
     genCSS: function (env, output) {