From 4b8a6d93c5a785c673ec6c9f8a09880c48dee065 Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Fri, 13 Jun 2014 23:51:20 +0300
Subject: Fix crash with software renderer.

---
 src/graphicsvertexes.cpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/graphicsvertexes.cpp b/src/graphicsvertexes.cpp
index 297762146..c632952ee 100644
--- a/src/graphicsvertexes.cpp
+++ b/src/graphicsvertexes.cpp
@@ -97,8 +97,15 @@ void OpenGLGraphicsVertexes::clear()
     }
     mIntTexPool.clear();
 
-    mglDeleteBuffers(mVbo.size(), &mVbo[0]);
-    mVbo.clear();
+    if (mglDeleteBuffers)
+    {
+        const int sz = mVbo.size();
+        if (sz > 0)
+        {
+            mglDeleteBuffers(sz, &mVbo[0]);
+            mVbo.clear();
+        }
+    }
 
     mVp.clear();
     if (ptr)
-- 
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