share token could still contain "+", which Vfs::encodePathComponent was not encoding

fixes some files not opening in Collabora

api/src/Vfs/Sharing.php

@@ -371,7 +371,7 @@ class Sharing
 				base64_encode(openssl_random_pseudo_bytes(3*self::TOKEN_LENGTH/4)) :
 				Api\Auth::randomstring(self::TOKEN_LENGTH);
 			// base64 can contain chars not allowed in our vfs-urls eg. / or #
-		} while ($token != Vfs::encodePathComponent($token));
+		} while ($token != urlencode($token));
 
 		return $token;
 	}