From ae2ddb25cc7b694049d136772195993cfb17c91e Mon Sep 17 00:00:00 2001
From: Michael Kirk <michael.code@endoftheworl.de>
Date: Tue, 13 Feb 2018 08:06:07 -0800
Subject: [PATCH] CR: add assert

// FREEBIE
---
 SignalServiceKit/src/Messages/TSGroupModel.m | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/SignalServiceKit/src/Messages/TSGroupModel.m b/SignalServiceKit/src/Messages/TSGroupModel.m
index 187b63c63..e17d4784d 100644
--- a/SignalServiceKit/src/Messages/TSGroupModel.m
+++ b/SignalServiceKit/src/Messages/TSGroupModel.m
@@ -15,6 +15,8 @@ NS_ASSUME_NONNULL_BEGIN
                         image:(nullable UIImage *)image
                       groupId:(NSData *)groupId
 {
+    OWSAssert(memberIds);
+
     _groupName              = title;
     _groupMemberIds         = [memberIds copy];
     _groupImage = image; // image is stored in DB