修复公文编辑器转word时，IE的样式计算错误问题

o2web/source/x_component_process_Xform/widget/OOXML.js

@@ -611,7 +611,8 @@ o2.xApplication.process.Xform.widget.OOXML.WordprocessingML = o2.OOXML.WML = new
             }
         }
 
-        var line = dom.getStyle("line-height");
+        var line = (dom.currentStyle) ? dom.currentStyle["line-height"] : dom.getStyle("line-height");
+        //var line = dom.getStyle("line-height");
         if (line && line.toFloat()){
             var line = this.pxToPt(line)*20;
             if (line) {