bug#2854:在同一页面中同时打开新建帖子和回复帖子的编辑器，在新建帖子的编辑器中贴图，在第二个编辑器中却显示多个贴的图片

public/assets/kindeditor/plugins/paste/paste.js

@@ -293,7 +293,13 @@ https://github.com/layerssss/paste.js
 KindEditor.plugin('paste', function(K) {
     var editor = this,
         name = 'paste';
-    var contentWindow = document.getElementsByTagName('iframe')[0].contentWindow;
+    //这样貌似多编辑器就不会冲突了
+    if(editor.edit == undefined || editor.edit.iframe == undefined){
+        return;
+    }
+    var contentWindow = editor.edit.iframe[0].contentWindow;
+    //var contentWindow = editor.iframeDoc;
+    //var contentWindow = document.getElementsByTagName('iframe')[0].contentWindow;
     var nodeBody = contentWindow.document.getElementsByTagName('body')[0];
     console.log(nodeBody);
     $(nodeBody).pastableContenteditable();