Fix PHP notice on changelog sort command (yiisoft#12628)

``` PHP Notice 'yii\base\ErrorException' with message 'Only variables should be passed by reference' in ../build/controllers/ReleaseController.php:321 ```
Deele · Sep 28, 2016 · 2258821 · 2258821
1 parent 4f17cd0
commit 2258821
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/build/controllers/ReleaseController.php b/build/controllers/ReleaseController.php
@@ -318,7 +318,7 @@ public function actionSortChangelog(array $what)
         }
         $this->validateWhat($what, ['framework', 'ext'], false);
 
-        $version = reset($this->getNextVersions($this->getCurrentVersions($what), self::PATCH));
+        $version = array_values($this->getNextVersions($this->getCurrentVersions($what), self::PATCH))[0];
         $this->stdout('sorting CHANGELOG of ');
         $this->stdout(reset($what), Console::BOLD);
         $this->stdout(" for version ");