修改库存、物料、物料类型导入方法

src/main/resources/templates/pages/depository/table-stock.html

@@ -113,7 +113,7 @@
 
     }
 
-    let socket;
+    let socket = null;
 
     let newIndexShade;
 

src/main/resources/templates/pages/material/material-out.html

@@ -134,7 +134,7 @@
 
     }
 
-    let socket;
+    let socket = null;
 
     let newIndexShade;
 

src/main/resources/templates/pages/materialtype/materialType_view.html

@@ -108,7 +108,7 @@
 
     }
 
-    let socket;
+    let socket = null;
 
     let newIndexShade;