From fa56750d30571514e5607cb73c8edcf951e229f7 Mon Sep 17 00:00:00 2001
From: Pieter-Jan Briers <pieterjan.briers+git@gmail.com>
Date: Sat, 13 Jan 2024 00:22:10 +0100
Subject: [PATCH] Fix exception with gas overlay rendering (#24001)

I had to rewrite this code for #23745 and forgot to test it. Damnit.
---
 Content.Shared/Atmos/GasOverlayChunk.cs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/Content.Shared/Atmos/GasOverlayChunk.cs b/Content.Shared/Atmos/GasOverlayChunk.cs
index b8299e8e22..564ab72bfc 100644
--- a/Content.Shared/Atmos/GasOverlayChunk.cs
+++ b/Content.Shared/Atmos/GasOverlayChunk.cs
@@ -70,7 +70,7 @@ namespace Content.Shared.Atmos
 
         public bool MoveNext(out GasOverlayData gas)
         {
-            while (_index < _tileData.Length)
+            while (++_index < _tileData.Length)
             {
                 X += 1;
                 if (X >= ChunkSize)
@@ -79,7 +79,6 @@ namespace Content.Shared.Atmos
                     Y += 1;
                 }
 
-                _index += 1;
                 gas = _tileData[_index];
                 if (!gas.Equals(default))
                     return true;