Merge branch 'fix/Process.log_opinion_show_undefined' into 'develop'

Merge of fix/[流程管理]修复流程提交的时候意见可能为undefined的问题

See merge request o2oa/o2oa!146

o2web/source/x_component_process_Xform/Form.js

@@ -1397,7 +1397,7 @@ MWF.xApplication.process.Xform.Form = MWF.APPForm = new Class({
             if (this.app && this.app.fireEvent) this.app.fireEvent("beforeSave");
             this.saveFormData(function (json) {
                 this.businessData.task.routeName = routeName;
-                this.businessData.task.opinion = opinion;
+                this.businessData.task.opinion = opinion || "";
 
                 var mediaIds = [];
                 if (medias && medias.length) {