fix(resource): continue to fixed bug of resource item is null

src/module/resource.js

@@ -256,20 +256,22 @@ define(function(require, exports, module) {
                 var spaceRight = node.getStyle('space-right');
 
                 var overlays = this.overlays;
-                var resource = node.getData('resource');
-                var minder = node.getMinder();
-                var i, overlay, x;
-
-                x = 0;
-                for (i = 0; i < resource.length; i++) {
 
                 /*  修复 resource 数组中出现 null 的 bug
                  *  @Author zhangbobell
                  *  @date 2016-01-15
                  */
-                    if (!resource[i]) {
-                        continue;
+                var resource = node.getData("resource").filter(function(ele) {
+                    return ele !== null;
+                });
+                if (resource.length === 0) {
+                    return;
                 }
+                var minder = node.getMinder();
+                var i, overlay, x;
+
+                x = 0;
+                for (i = 0; i < resource.length; i++) {
 
                     x += spaceRight;