patch for mars - AUR

--- mars-build/src/System/window.cpp
+++ mars-build/src/System/window.cpp
@@ -308,13 +308,10 @@
         glEnable(GL_TEXTURE_2D);

         if (shader)
-            shader->bind();
+            shader->bind(NULL);

         window_.draw(toBeDrawn, states);

-        if (shader)
-            shader->unbind();
-
         window_.popGLStates();
         glPopMatrix();
         glPopAttrib();