corrected string comparison of username

Wadeck · agentgonzo · web-flow · commit 6c9f6d946fc3 · 2019-02-21T10:35:09.000Z
Co-Authored-By: agentgonzo &lt;sarch@cloudbees.com&gt;
diff --git a/src/main/java/org/jenkinsci/plugins/GithubSecurityRealm.java b/src/main/java/org/jenkinsci/plugins/GithubSecurityRealm.java
@@ -659,7 +659,7 @@ public UserDetails loadUserByUsername(String username)
 
         Authentication token = SecurityContextHolder.getContext().getAuthentication();
 
-        if (token == null || username != token.getPrincipal()) {
+        if (token == null || !username.equals(token.getPrincipal())) {
             if(localUser != null && GithubSecretStorage.contains(localUser)){
                 String accessToken = GithubSecretStorage.retrieve(localUser);
                 try {
