From da595d62f4290d6a0bcfc6d4fa086628e1412dc9 Mon Sep 17 00:00:00 2001
From: 13xforever <ilya.veselov@gmail.com>
Date: Sat, 4 Apr 2020 10:19:39 +0500
Subject: [PATCH] fix potential issue with new builds monitor

---
 CompatBot/Commands/CompatList.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/CompatBot/Commands/CompatList.cs b/CompatBot/Commands/CompatList.cs
index 0d98ce94..9c1e5ddf 100644
--- a/CompatBot/Commands/CompatList.cs
+++ b/CompatBot/Commands/CompatList.cs
@@ -314,13 +314,13 @@ namespace CompatBot.Commands
                 if (newestPrCommit.MergedAt == null || oldestPrCommit.MergedAt == null)
                     return;
 
-                mergedPrs = mergedPrs.Where(pri => pri.MergedAt.HasValue)
+                mergedPrs = mergedPrs?.Where(pri => pri.MergedAt.HasValue)
                     .OrderBy(pri => pri.MergedAt.Value)
                     .SkipWhile(pri => pri.Number != oldestPr)
                     .Skip(1)
                     .TakeWhile(pri => pri.Number != newestPr)
                     .ToList();
-                if (mergedPrs.Count == 0)
+                if (mergedPrs is null || mergedPrs.Count == 0)
                     return;
 
                 var failedBuilds = await Config.GetAzureDevOpsClient().GetMasterBuildsAsync(