From afd7fc8a2530278944cd9c030f17f47b78fea83b Mon Sep 17 00:00:00 2001
From: rdb <git@rdb.name>
Date: Tue, 31 Dec 2019 17:15:07 +0100
Subject: [PATCH] dxgsg9: don't try to Release() vertex buffer if it failed to
 create

---
 panda/src/dxgsg9/dxGraphicsStateGuardian9.cxx | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/panda/src/dxgsg9/dxGraphicsStateGuardian9.cxx b/panda/src/dxgsg9/dxGraphicsStateGuardian9.cxx
index ca3fb07d79..bd36f99da3 100644
--- a/panda/src/dxgsg9/dxGraphicsStateGuardian9.cxx
+++ b/panda/src/dxgsg9/dxGraphicsStateGuardian9.cxx
@@ -615,8 +615,10 @@ release_vertex_buffer(VertexBufferContext *vbc) {
   }
   #endif
 
-  dvbc->_vbuffer->Release();
-  dvbc->_vbuffer = nullptr;
+  if (dvbc->_vbuffer != nullptr) {
+    dvbc->_vbuffer->Release();
+    dvbc->_vbuffer = nullptr;
+  }
 
   delete dvbc;
 }