From f9947c16c47cbdc23cd0017bdfa095856dd53807 Mon Sep 17 00:00:00 2001
From: Chris Tibbs <eggyeggbean@google.com>
Date: Wed, 15 May 2019 11:44:50 -0400
Subject: [PATCH] Early return from sending analytics events in instance ID is
 nil

---
 Firebase/InAppMessaging/Analytics/FIRIAMClearcutLogger.m | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Firebase/InAppMessaging/Analytics/FIRIAMClearcutLogger.m b/Firebase/InAppMessaging/Analytics/FIRIAMClearcutLogger.m
index 4cb8a134b89..e55fe30528d 100644
--- a/Firebase/InAppMessaging/Analytics/FIRIAMClearcutLogger.m
+++ b/Firebase/InAppMessaging/Analytics/FIRIAMClearcutLogger.m
@@ -149,6 +149,13 @@ - (void)logAnalyticsEventForType:(FIRIAMAnalyticsLogEventType)eventType
     eventTimeInMs = @((long)nowInMs);
   }
 
+  if (!iid) {
+    FIRLogWarning(kFIRLoggerInAppMessaging, @"I-IAM210009",
+                  @"Instance ID is nil, event %ld for campaign ID %@ will not be sent",
+                  (long)eventType, campaignID);
+    return;
+  }
+
   NSString *sourceExtensionJsonString =
       [self constructSourceExtensionJsonForClearcutWithEventType:eventType
                                                    forCampaignID:campaignID