fix:1）新闻搜索页搜索关键字“扬子晚报”或者“广西公安”必现系统奔溃

@@ -146,6 +146,7 @@ export struct RmhTitle {
                   .height(16)
                   .height(16)
               }
               }
             }
             }
+            if(this.rmhInfo?.rmhDesc != undefined){
               Text(this.rmhInfo?.rmhDesc.replaceAll('\n', ''))
               Text(this.rmhInfo?.rmhDesc.replaceAll('\n', ''))
                 .fontSize($r("app.float.font_size_12"))
                 .fontSize($r("app.float.font_size_12"))
                 .fontColor($r("app.color.color_B0B0B0"))
                 .fontColor($r("app.color.color_B0B0B0"))
@@ -154,6 +155,8 @@ export struct RmhTitle {
                 .textOverflow({ overflow: TextOverflow.Ellipsis })
                 .textOverflow({ overflow: TextOverflow.Ellipsis })
                 .textAlign(TextAlign.Start)
                 .textAlign(TextAlign.Start)
             }
             }
+
+          }
           .width('75%')
           .width('75%')
         }
         }
       }
       }