Corrected return types

Author: yogeshsuhagiya

app/code/Magento/Fedex/Model/Carrier.php

@@ -363,7 +363,6 @@ public function setRequest(RateRequest $request)
 
         if ($request->getDestPostcode()) {
             $r->setDestPostal($request->getDestPostcode());
-        } else {
         }
 
         if ($request->getDestCity()) {

app/code/Magento/GiftMessage/Block/Adminhtml/Sales/Order/View/Items.php

@@ -171,7 +171,7 @@ public function getMessage()
     /**
      * Retrieve save url
      *
-     * @return array
+     * @return string
      * @codeCoverageIgnore
      */
     public function getSaveUrl()

app/code/Magento/GiftMessage/Block/Cart/GiftOptions.php

@@ -76,7 +76,7 @@ public function getJsLayout()
     /**
      * Retrieve gift message configuration
      *
-     * @return array
+     * @return string
      */
     public function getGiftOptionsConfigJson()
     {

app/code/Magento/GiftMessage/Model/Type/Plugin/Onepage.php

@@ -32,7 +32,7 @@ public function __construct(
     /**
      * @param \Magento\Checkout\Model\Type\Onepage $subject
      * @param array $result
-     * @return $this
+     * @return array
      */
     public function afterSaveShippingMethod(
         \Magento\Checkout\Model\Type\Onepage $subject,