Fix incorrect rendering of point vertex lights
Fix incorrect rendering of point vertex lights

Spot light attenuation is not completely suppressed for point lights with cutoff = -1.0f
urho3d/Urho3D,eugeneko/Urho3D,bacsmar/Urho3D,bacsmar/Urho3D,PredatorMF/Urho3D,SuperWangKai/Urho3D,PredatorMF/Urho3D,bacsmar/Urho3D,henu/Urho3D,eugeneko/Urho3D,SuperWangKai/Urho3D,SuperWangKai/Urho3D,henu/Urho3D,orefkov/Urho3D,eugeneko/Urho3D,bacsmar/Urho3D,urho3d/Urho3D,PredatorMF/Urho3D,rokups/Urho3D,rokups/Urho3D,henu/Urho3D,urho3d/Urho3D,orefkov/Urho3D,rokups/Urho3D,PredatorMF/Urho3D,orefkov/Urho3D,orefkov/Urho3D,SuperWangKai/Urho3D,rokups/Urho3D,urho3d/Urho3D,rokups/Urho3D,rokups/Urho3D,henu/Urho3D,SuperWangKai/Urho3D,henu/Urho3D,eugeneko/Urho3D