Update OSMessagingController.m

Author: nan-li

iOS_SDK/OneSignalSDK/OneSignalInAppMessages/Controller/OSMessagingController.m

@@ -258,6 +258,7 @@ - (void)getInAppMessagesFromServer:(NSString *)subscriptionId {
         OSConsistencyManager *consistencyManager = [OSConsistencyManager shared];
         NSString *onesignalId = OneSignalUserManagerImpl.sharedInstance.onesignalId;
 
+        // NOTE: Check for subscription ID above first, before checking for OneSignal ID next
         if (!onesignalId) {
             [OneSignalLog onesignalLog:ONE_S_LL_VERBOSE message:@"Failed to get in app messages due to no OneSignal ID, will reattempt"];
             self.shouldFetchOnUserChangeWithSubscriptionID = subscriptionId;