Bug 592769 - EGL and WGL context providers crash on exit because they forget to delete the global context before the glue library dies - r=mattwoodrow, a=blocking-beta7

gfx/thebes/GLContextProviderEGL.cpp

@@ -1608,6 +1608,7 @@ GLContextProviderEGL::GetGlobalContext()
 void
 GLContextProviderEGL::Shutdown()
 {
+    gGlobalContext = nsnull;
 }
 
 } /* namespace gl */

gfx/thebes/GLContextProviderWGL.cpp

@@ -741,6 +741,7 @@ GLContextProviderWGL::GetGlobalContext()
 void
 GLContextProviderWGL::Shutdown()
 {
+    gGlobalContext = nsnull;
 }
 
 } /* namespace gl */