From 6fd251e8f7f246df7bf8446ae7b0f380bab643ed Mon Sep 17 00:00:00 2001
From: elsid <elsid.mail@gmail.com>
Date: Sat, 19 Feb 2022 21:41:40 +0100
Subject: [PATCH] Avoid starting async png writing when overlay image is null

---
 apps/openmw/mwrender/globalmap.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/apps/openmw/mwrender/globalmap.cpp b/apps/openmw/mwrender/globalmap.cpp
index 3d0a066451..acd566ff18 100644
--- a/apps/openmw/mwrender/globalmap.cpp
+++ b/apps/openmw/mwrender/globalmap.cpp
@@ -635,6 +635,8 @@ namespace MWRender
 
     void GlobalMap::asyncWritePng()
     {
+        if (mOverlayImage == nullptr)
+            return;
         // Use deep copy to avoid any sychronization
         mWritePng = new WritePng(new osg::Image(*mOverlayImage, osg::CopyOp::DEEP_COPY_ALL));
         mWorkQueue->addWorkItem(mWritePng, /*front=*/true);