Merge pull request #29627 from laravel/5.8-cache-alias

[5.8] Avoid call to method alias

src/Illuminate/Cache/Repository.php

@@ -205,7 +205,7 @@ public function put($key, $value, $ttl = null)
         $seconds = $this->getSeconds($ttl);
 
         if ($seconds <= 0) {
-            return $this->delete($key);
+            return $this->forget($key);
         }
 
         $result = $this->store->put($this->itemKey($key), $value, $seconds);