修复bug

student/src/main/java/com/cooleshow/student/adapter/MessageBoxAdapter.java

@@ -97,7 +97,7 @@ public class MessageBoxAdapter extends BaseQuickAdapter<SystemMessageBean.RowsBe
                 im_type.setBackgroundResource(R.drawable.icon_message_piano);
                 break;
             case "STYLE":
-                im_type.setBackgroundResource(R.drawable.icon_message_piano);
+                im_type.setBackgroundResource(R.drawable.icon_message_audit);
                 break;
             default:
                 //公告

teacher/src/main/java/com/cooleshow/teacher/adapter/MessageBoxAdapter.java

@@ -97,7 +97,7 @@ public class MessageBoxAdapter extends BaseQuickAdapter<SystemMessageBean.RowsBe
                 im_type.setBackgroundResource(R.drawable.icon_message_piano);
                 break;
             case "STYLE":
-                im_type.setBackgroundResource(R.drawable.icon_message_piano);
+                im_type.setBackgroundResource(R.drawable.icon_message_audit);
                 break;
             default:
                 //公告