Fix inconsistency of application of amb_da between class1 spotLightF and...

Fix inconsistency of application of amb_da between class1 spotLightF and class1 multiSpotF, class 2 spotlight shaders

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

@@ -195,7 +195,7 @@ void main()
 			lit = da * dist_atten * noise;
 
 			col = dlit*lit*diff_tex;
-			//amb_da += (da*0.5)*(1.0-shadow)*proj_ambiance;
+			amb_da += (da*0.5)*proj_ambiance;
 		}
 		//float diff = clamp((proj_range-proj_focus)/proj_range, 0.0, 1.0);
 		vec4 amb_plcol = texture2DLodAmbient(projectionMap, proj_tc.xy, proj_lod);