Fixed GLES 2.0 shader compiler error in Integration Test suite.

com.unity.render-pipelines.lightweight/LWRP/ShaderLibrary/Input.hlsl

 float4 _ScaledScreenParams;
 CBUFFER_END
 
+#if USE_STRUCTURED_BUFFER_FOR_LIGHT_DATA
+#endif
 
 #define UNITY_MATRIX_M     unity_ObjectToWorld
 #define UNITY_MATRIX_I_M   unity_WorldToObject