From 974e4d5299515a0b754215b06fbd5c6ee72dded5 Mon Sep 17 00:00:00 2001
From: AnyOldName3 <krizdjali+github@gmail.com>
Date: Fri, 24 Nov 2017 22:43:40 +0000
Subject: [PATCH] Add check for null shaders when releasing OpenGL objects

---
 components/shader/shadermanager.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/components/shader/shadermanager.cpp b/components/shader/shadermanager.cpp
index b8beffa2e1..3b18d0b756 100644
--- a/components/shader/shadermanager.cpp
+++ b/components/shader/shadermanager.cpp
@@ -347,7 +347,10 @@ namespace Shader
     {
         OpenThreads::ScopedLock<OpenThreads::Mutex> lock(mMutex);
         for (auto shader : mShaders)
-            shader.second->releaseGLObjects(state);
+        {
+            if (shader.second != nullptr)
+                shader.second->releaseGLObjects(state);
+        }
         for (auto program : mPrograms)
             program.second->releaseGLObjects(state);
     }