No need to create a storage within remove

lib/private/files/cache/storage.php

@@ -43,12 +43,15 @@ class Storage {
 		}
 	}
 
+	/**
+	 * @return string
+	 */
 	public function getNumericId() {
 		return $this->numericId;
 	}
 
 	/**
-	 * @return string
+	 * @return string|null
 	 */
 	public static function getStorageId($numericId) {
 
@@ -62,37 +65,46 @@ class Storage {
 	}
 
 	/**
-	 * @param string $storageId
+	 * @return string|null
 	 */
-	public static function exists($storageId) {
+	public static function getNumericStorageId($storageId) {
 		if (strlen($storageId) > 64) {
 			$storageId = md5($storageId);
 		}
+
 		$sql = 'SELECT `numeric_id` FROM `*PREFIX*storages` WHERE `id` = ?';
 		$result = \OC_DB::executeAudited($sql, array($storageId));
 		if ($row = $result->fetchRow()) {
-			return true;
+			return $row['numeric_id'];
 		} else {
-			return false;
+			return null;
 		}
 	}
 
+	/**
+	 * @param string $storageId
+	 * @return bool
+	 */
+	public static function exists($storageId) {
+		return !is_null(self::getNumericStorageId($storageId));
+	}
+
 	/**
 	 * remove the entry for the storage
 	 *
 	 * @param string $storageId
 	 */
 	public static function remove($storageId) {
-		$storageCache = new Storage($storageId);
-		$numericId = $storageCache->getNumericId();
-
 		if (strlen($storageId) > 64) {
 			$storageId = md5($storageId);
 		}
 		$sql = 'DELETE FROM `*PREFIX*storages` WHERE `id` = ?';
 		\OC_DB::executeAudited($sql, array($storageId));
 
+		$numericId = self::exists($storageId);
+		if (!is_null($numericId)) {
 			$sql = 'DELETE FROM `*PREFIX*filecache` WHERE `storage` = ?';
 			\OC_DB::executeAudited($sql, array($numericId));
 		}
 	}
+}