minor code improvements

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

de.srsoftware.oidc.app/src/main/java/de/srsoftware/oidc/app/Application.java

@@ -53,7 +53,9 @@ public class Application {
 	public static void main(String[] args) throws Exception {
 		var            argMap      = map(args);
 		Optional<Path> basePath    = argMap.get(BASE_PATH) instanceof Path p ? Optional.of(p) : empty();
-		var            configFile = (argMap.get(CONFIG_PATH) instanceof Path p ? p : configDir(APP_NAME).resolve("config.json")).toFile();
+		var            configDir   = configDir(APP_NAME);
+		var            defaultFile = configDir.resolve("data.json");
+		var            configFile  = (argMap.get(CONFIG_PATH) instanceof Path p ? p : configDir.resolve("config.json")).toFile();
 		var            config      = new Configuration(configFile);
 		var            passHasher  = new UuidHasher();
 		var            firstHash   = passHasher.hash(FIRST_USER_PASS, FIRST_UUID);
@@ -61,12 +63,10 @@ public class Application {
 
 
 		FileStoreProvider fileStoreProvider = new FileStoreProvider(passHasher);
-		var	  defaultConfigDir  = configDir(APP_NAME);
-		var	  defaultFile	    = defaultConfigDir.resolve("data.json");
 		var	  userService	    = setupUserService(config, defaultFile, fileStoreProvider).init(firstUser);
 		var	  sessionService    = setupSessionService(config, defaultFile, fileStoreProvider);
 		var	  mailConfig	    = setupMailConfig(config, defaultFile, fileStoreProvider);
-		var	  keyStore	    = setupKeyStore(config, defaultConfigDir);
+		var	  keyStore	    = setupKeyStore(config, configDir);
 		KeyManager	  keyManager	    = new RotatingKeyManager(keyStore);
 		var	  authService	    = setupAuthService(config, defaultFile, fileStoreProvider);
 		var	  clientService	    = setupClientService(config, defaultFile, fileStoreProvider);