Fix Send Tags Issue (#332)

• Fixes an issue where if a developer sends tags within 30 seconds of the app being launched for the first time (before registration happens), the tags callbacks will not get called when the tags do eventually get sent (during registration).

Author: Nightsd01

iOS_SDK/OneSignalSDK/Source/OneSignal.m

@@ -1039,9 +1039,14 @@ + (void)registerUserInternal {
     if (releaseMode == UIApplicationReleaseDev || releaseMode == UIApplicationReleaseAdHoc || releaseMode == UIApplicationReleaseWildcard)
         dataDic[@"test_type"] = [NSNumber numberWithInt:releaseMode];
 
+    NSArray* nowProcessingCallbacks;
+    
     if (tagsToSend) {
         dataDic[@"tags"] = tagsToSend;
         tagsToSend = nil;
+        
+        nowProcessingCallbacks = pendingSendTagCallbacks;
+        pendingSendTagCallbacks = nil;
     }
 
     [OneSignal onesignal_Log:ONE_S_LL_VERBOSE message:@"Calling OneSignal create/on_session"];
@@ -1068,6 +1073,12 @@ + (void)registerUserInternal {
             [[NSUserDefaults standardUserDefaults] setObject:self.currentSubscriptionState.userId forKey:@"GT_PLAYER_ID"];
             [[NSUserDefaults standardUserDefaults] synchronize];
 
+            if (nowProcessingCallbacks) {
+                for (OSPendingCallbacks *callbackSet in nowProcessingCallbacks) {
+                    callbackSet.successBlock(dataDic[@"tags"]);
+                }
+            }
+            
             if (self.currentSubscriptionState.pushToken)
                 [self updateDeviceToken:self.currentSubscriptionState.pushToken
                               onSuccess:tokenUpdateSuccessBlock
@@ -1101,6 +1112,12 @@ + (void)registerUserInternal {
 
         //If the failed registration is priority, force the next one to be a high priority
         nextRegistrationIsHighPriority = YES;
+        
+        if (nowProcessingCallbacks) {
+            for (OSPendingCallbacks *callbackSet in nowProcessingCallbacks) {
+                callbackSet.failureBlock(error);
+            }
+        }
     }];
 }