dont use `false` as cache key for non utf8 path in normalizePath

since `json_encode` returns `false` if it's input isn't utf8, all non utf8 paths passed to normalizePath will currently return the same cached result.

Fixing this makes working with non utf8 storages a *little* bit more possible for apps

Signed-off-by: Robin Appelman <robin@icewind.nl>

diff --git a/lib/private/Files/Filesystem.php b/lib/private/Files/Filesystem.php
index b85554ae333a311ac3d1cbf093b05545895312ad..3ad518b3950b6b996a15d4e8fd7973ccbf3d530c 100644 (file)
--- a/lib/private/Files/Filesystem.php
+++ b/lib/private/Files/Filesystem.php
@@ -813,7 +813,7 @@ class Filesystem {
 
                $cacheKey = json_encode([$path, $stripTrailingSlash, $isAbsolutePath, $keepUnicode]);
 
-               if (isset(self::$normalizedPathCache[$cacheKey])) {
+               if ($cacheKey && isset(self::$normalizedPathCache[$cacheKey])) {
                        return self::$normalizedPathCache[$cacheKey];
                }