From 3a7188b36eac88036a365aa2938da9be07b4bb15 Mon Sep 17 00:00:00 2001
From: Pavel_Sorokin <sorokin.zxcv@gmail.com>
Date: Thu, 10 Nov 2022 22:14:56 +0400
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---
 Liner/Liner/MapsCollection.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Liner/Liner/MapsCollection.cs b/Liner/Liner/MapsCollection.cs
index c3157f7..80106d5 100644
--- a/Liner/Liner/MapsCollection.cs
+++ b/Liner/Liner/MapsCollection.cs
@@ -68,8 +68,8 @@ namespace Liner
             }
             using (StreamReader sr = new(filename))
             {
-                string str = sr.ReadLine();
-                if (!str.Contains("MapsCollection"))
+                string str = "";
+                if ((str = sr.ReadLine()) == null || !str.Contains("MapsCollection"))
                 {
                     return false;
                 }