发送消息服务优化

src/Notice/Extensions/Notice/MiniBackendSender.php

@@ -64,7 +64,7 @@ class MiniBackendSender implements SenderInterface
      */
     public function getData ()
     {
-        return $this->data;
+        return $this->data === null?[]:$this->data;
     }
 
     /**

src/Notice/Extensions/Notice/MiniFrontendSender.php

@@ -90,7 +90,7 @@ class MiniFrontendSender implements SenderInterface
      */
     public function getData ()
     {
-        return $this->data;
+        return $this->data === null?[]:$this->data;
     }
 
     /**

src/Notice/Extensions/Notice/MpSender.php

@@ -50,7 +50,7 @@ class MpSender implements SenderInterface
 
     public function getData()
     {
-        return $this->data;
+        return $this->data === null?[]:$this->data;
     }
 
     public function getSendType()

src/Notice/Extensions/Notice/TencentSMS.php

@@ -42,7 +42,7 @@ class TencentSMS implements SenderInterface
 
     public function getData()
     {
-        $this->data;
+        return $this->data === null?[]:$this->data;
     }
 
     public function getSendType()