Clean up a mul in deferred moon vertex shader

indra/newview/app_settings/shaders/class1/deferred/moonV.glsl

@@ -36,9 +36,9 @@ void main()
 {
     //transform vertex
     vec4 vert = vec4(position.xyz, 1.0);
-    vec4 pos = (modelview_matrix * vert);
+    vec4 pos = (modelview_projection_matrix * vert);
 
-    gl_Position = modelview_projection_matrix*vert;
+    gl_Position = pos;
 
     vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
 }