Small change to synchronize all read operations on the credentialeduserroster.
automerge: adb9af5

* commit 'adb9af592a6f210b68f9830f73dc9e5e3a58b852':
  Small change to synchronize all read operations on the credentialeduserroster.
diff --git a/src/com/google/gct/login/CredentialedUserRoster.java b/src/com/google/gct/login/CredentialedUserRoster.java
index 21aa574..f96ea6b 100644
--- a/src/com/google/gct/login/CredentialedUserRoster.java
+++ b/src/com/google/gct/login/CredentialedUserRoster.java
@@ -63,7 +63,9 @@
    */
   @Nullable
   public CredentialedUser getActiveUser() {
-    return myActiveUser;
+    synchronized (this) {
+      return myActiveUser;
+    }
   }
 
   /**
@@ -119,7 +121,9 @@
    * @return True if there is an active user and false otherwise.
    */
   public boolean isActiveUserAvailable() {
-    return myActiveUser != null;
+    synchronized (this) {
+      return myActiveUser != null;
+    }
   }
 
   /**
@@ -193,5 +197,4 @@
       }
     }
   }
-
 }