Merge pull request #980 from rosiel/issue-975

Declare httpClient variable.

modules/islandora_iiif/src/Plugin/views/style/IIIFManifest.php

@@ -87,6 +87,13 @@ class IIIFManifest extends StylePluginBase {
    */
   protected $fileSystem;
 
+  /**
+   * The Guzzle HTTP Client.
+   *
+   * @var \GuzzleHttp\Client
+   */
+  protected $httpClient;
+
   /**
    * The messenger.
    *