Resolve "Reviewing Badges: Zusätzliche Icons"

Related to #397 (closed)

src/main/java/at/ac/uibk/gitsearch/security/oauth2/SavedRequestAwareAuthenticationSuccessHandlerWithJWTSupport.java

@@ -107,7 +107,7 @@ public class SavedRequestAwareAuthenticationSuccessHandlerWithJWTSupport extends
 
         private final transient Principal principal;
 
-        private transient Collection<? extends GrantedAuthority> authorities;
+        private final transient Collection<? extends GrantedAuthority> authorities;
 
         private boolean authenticated = false;