Remove duplicated slashes from the requested url

lib/private/request.php

@@ -278,6 +278,8 @@ class OC_Request {
 			$requestUri = '/' . ltrim($requestUri, '/');
 		}
 
+		$requestUri = preg_replace('%/{2,}%', '/', $requestUri);
+
 		// Remove the query string from REQUEST_URI
 		if ($pos = strpos($requestUri, '?')) {
 			$requestUri = substr($requestUri, 0, $pos);