From eabbb20d17164092a886b462d3711bfa18eabd21 Mon Sep 17 00:00:00 2001
From: Camilla Berglund <elmindreda@elmindreda.org>
Date: Fri, 1 Nov 2013 13:55:33 +0100
Subject: [PATCH] Added NULL test for glGetStringi.

---
 src/context.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/context.c b/src/context.c
index 456413b5..ca7b8d61 100644
--- a/src/context.c
+++ b/src/context.c
@@ -595,11 +595,12 @@ GLFWAPI int glfwExtensionSupported(const char* extension)
 
         for (i = 0;  i < count;  i++)
         {
-             if (strcmp((const char*) window->GetStringi(GL_EXTENSIONS, i),
-                         extension) == 0)
-             {
-                 return GL_TRUE;
-             }
+            const char* en = (const char*) window->GetStringi(GL_EXTENSIONS, i);
+            if (en != NULL)
+            {
+                if (strcmp(en, extension) == 0)
+                    return GL_TRUE;
+            }
         }
     }
 #endif // _GLFW_USE_OPENGL