Merge pull request #186000 in DEC/fineui from master to feature/x

* commit '18c5bcbffe542803fd4c1cf0a2005f4e84bca00f':
  JSY-22136 内存问题

src/base/grid/grid.js

@@ -97,6 +97,12 @@ BI.GridView = BI.inherit(BI.Widget, {
         }
     },
     
+    destroyed: function () {
+        BI.each(this.renderedCells, function(i, cell) {
+            cell.el._destroy();
+        })
+    },
+
     _calculateSizeAndPositionData: function () {
         var o = this.options;
         this.rowCount = 0;