Fix build error on Windows 32bit, alignment was wrong.

intern/cycles/kernel/kernel_types.h

@@ -1278,13 +1278,11 @@ typedef struct KernelFilm {
 	float mist_start;
 	float mist_inv_depth;
 	float mist_falloff;
-	
+
 	int pass_denoising_data;
 	int pass_denoising_clean;
 	int denoising_flags;
 
-	int pad1, pad2;
-
 	/* XYZ to rendering color space transform. float4 instead of float3 to
 	 * ensure consistent padding/alignment across devices. */
 	float4 xyz_to_r;