From fa8c420112e0054876676c6476748c4abb6c4d9f Mon Sep 17 00:00:00 2001
From: Ansariel <none@none>
Date: Sat, 18 Mar 2017 22:22:54 +0100
Subject: [PATCH] Partially undo d536fd19aa9d as it causes OpenGL error:
 glDeleteObjectARB - GL_INVALID_VALUE

---
 indra/llrender/llglslshader.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/indra/llrender/llglslshader.cpp b/indra/llrender/llglslshader.cpp
index b50d76eb07..d3e85fbfa2 100644
--- a/indra/llrender/llglslshader.cpp
+++ b/indra/llrender/llglslshader.cpp
@@ -352,6 +352,11 @@ void LLGLSLShader::unloadInternal()
         for (GLsizei i = 0; i < count; i++)
         {
             glDetachObjectARB(mProgramObject, obj[i]);
+// <FS:Ansariel> OpenGL error: glDeleteObjectARB - GL_INVALID_VALUE
+#if !LL_DARWIN
+            if (glIsProgramARB(obj[i]))
+#endif
+// </FS:Ansariel>
                 glDeleteObjectARB(obj[i]);
             }