Eevee : Fix error with volumetrics.

source/blender/draw/engines/eevee/shaders/lamps_lib.glsl

@@ -298,6 +298,7 @@ vec3 light_translucent(LightData ld, vec3 W, vec3 N, vec4 l_vector, float scale)
 {
 	vec3 vis = vec3(1.0);
 
+#ifndef VOLUMETRICS
 	/* Only shadowed light can produce translucency */
 	if (ld.l_shadowid >= 0.0) {
 		ShadowData data = shadows_data[int(ld.l_shadowid)];
@@ -409,6 +410,7 @@ vec3 light_translucent(LightData ld, vec3 W, vec3 N, vec4 l_vector, float scale)
 	else {
 		vis = vec3(0.0);
 	}
+#endif
 
 	return vis;
 }