Handle case of GitHub returning 204 No Content in some scenarios whic…

…h breaks ResultPager because no array is returned (it's an empty string) - issue ResultPager::get() can return string #1091

lib/Github/ResultPager.php

@@ -86,6 +86,10 @@ public function fetch(AbstractApi $api, string $method, array $parameters = []):
         $api = $closure($api);
         $result = $api->$method(...$parameters);
 
+        if ($result === "" && $this->client->getLastResponse()->getStatusCode() === 204) {
+            $result = [];
+        }
+
         $this->postFetch(true);
 
         return $result;