12482: Sitemap image links in MultiStore

app/code/Magento/Sitemap/Model/Sitemap.php

@@ -273,6 +273,7 @@ class Sitemap extends \Magento\Framework\Model\AbstractModel implements \Magento
         /** @var $helper \Magento\Sitemap\Helper\Data */
         $helper = $this->_sitemapData;
         $storeId = $this->getStoreId();
+        $this->_storeManager->setCurrentStore($storeId);
 
         $this->addSitemapItem(new DataObject(
             [

app/code/Magento/Sitemap/Test/Unit/Model/SitemapTest.php

@@ -253,6 +253,8 @@ class SitemapTest extends \PHPUnit\Framework\TestCase
             $expectedWrites,
             null
         );
+        $this->storeManagerMock->expects($this->once())->method('setCurrentStore')->with(1);
+
         $model->generateXml();
 
         $this->assertCount(count($expectedFile), $actualData, 'Number of generated files is incorrect');
@@ -360,6 +362,8 @@ class SitemapTest extends \PHPUnit\Framework\TestCase
             $expectedWrites,
             $robotsInfo
         );
+        $this->storeManagerMock->expects($this->once())->method('setCurrentStore')->with(1);
+
         $model->generateXml();
     }