touch the file first, because a non existing file is not writable

Signed-off-by: Bernd Stellwag <burned@zerties.org>

Author: burned42

lib/private/Config.php

@@ -240,8 +240,8 @@ private function writeData() {
 		// Check if config directory/file is writable and/or create the config file
 		if (
 			(!is_file($this->configFilePath) && !is_writable(dirname($this->configFilePath)))
-			|| !is_writable($this->configFilePath)
 			|| !touch($this->configFilePath)
+			|| !is_writable($this->configFilePath)
 		) {
 			// TODO fix this via DI once it is very clear that this doesn't cause side effects due to initialization order
 			// currently this breaks app routes but also could have other side effects especially during setup and exception handling