Merge pull request #1593 from OneSignal/fix_set_language_callback

[Fix] set language callback

Author: tanaynigam

OneSignalSDK/onesignal/src/main/java/com/onesignal/UserStateSynchronizer.java

@@ -275,6 +275,7 @@ private void internalSyncUserState(boolean fromSyncService) {
                 getCurrentUserState().persistStateAfterSync(dependDiff, null);
                 sendTagsHandlersPerformOnSuccess();
                 externalUserIdUpdateHandlersPerformOnSuccess();
+                deviceInfoHandlersPerformOnSuccess();
                 return;
             }
             getToSyncUserState().persistState();
@@ -349,6 +350,7 @@ private void doPutSync(String userId, final JSONObject jsonBody, final JSONObjec
             OneSignal.onesignalLog(getLogLevel(), "Error updating the user record because of the null user id");
             sendTagsHandlersPerformOnFailure(new SendTagsError(-1, "Unable to update tags: the current user is not registered with OneSignal"));
             externalUserIdUpdateHandlersPerformOnFailure();
+            deviceInfoHandlersPerformOnFailure(new OSDeviceInfoError(-1, "Unable to set Language: the current user is not registered with OneSignal"));
             return;
         }