From 1e6f1d07d237cd7bcf484b508b96cd91940724dc Mon Sep 17 00:00:00 2001
From: Miterosan <miterosan@gmail.com>
Date: Tue, 7 Nov 2017 23:16:42 +0100
Subject: [PATCH] line can not be null in OsuLegacyDecoder.cs

---
 osu.Game/Beatmaps/Formats/OsuLegacyDecoder.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/osu.Game/Beatmaps/Formats/OsuLegacyDecoder.cs b/osu.Game/Beatmaps/Formats/OsuLegacyDecoder.cs
index 1c7a08d17a..2fb14c65f7 100644
--- a/osu.Game/Beatmaps/Formats/OsuLegacyDecoder.cs
+++ b/osu.Game/Beatmaps/Formats/OsuLegacyDecoder.cs
@@ -246,6 +246,9 @@ namespace osu.Game.Beatmaps.Formats
         /// <param name="line">The line which may contains variables.</param>
         private void decodeVariables(ref string line)
         {
+            if (line == null)
+                throw new ArgumentNullException(nameof(line));
+
             while (line.IndexOf('$') >= 0)
             {
                 string origLine = line;
@@ -622,6 +625,9 @@ namespace osu.Game.Beatmaps.Formats
 
         private void handleVariables(string line)
         {
+            if (line == null)
+                throw new ArgumentNullException(nameof(line));
+
             var pair = splitKeyVal(line, '=');
             variables[pair.Key] = pair.Value;
         }