Fixed reloading shader which failed to compile at start up but succeeded at runtime caused crash due to Model expecting access to attribute location of shader inputs

lib/renderer/opengl_renderer.rb

@@ -24,6 +24,8 @@ class IMICFPS
             shader.uniform_vec3("lights[#{i}].diffuse", light.diffuse)
             shader.uniform_vec3("lights[#{i}].specular", light.specular)
           end
+          gl_error?
+
 
           shader.uniform_integer("totalLights", lights.size)