Fix logging of user mapping

Author: derTobsch

src/main/java/coffee/synyx/auth/authentication/config/LdapCoffeeNetUserDetailsContextMapper.java

@@ -39,7 +39,7 @@ public UserDetails mapUserFromContext(DirContextOperations ctx, String username,
 
         String mail = ctx.getStringAttribute("mail");
         CoffeeNetUserDetails coffeeNetUserDetails = new CoffeeNetUserDetails(ldapUserDetails, mail);
-        LOGGER.info("//> Mapped user {} from ldap to CoffeeNetUserDetails", username);
+        LOGGER.info("//> Mapped user {} from ldap to CoffeeNetUserDetails", uid);
         LOGGER.debug("//> User {} is", coffeeNetUserDetails);
 
         return coffeeNetUserDetails;