Made MACROBLOCK.increase_denoising cond-compiled

Change-Id: I59ef7c49f72d2d40bbe5b56af11bdf5f9ae2f1b8

vp8/encoder/block.h

@@ -125,9 +125,9 @@ typedef struct macroblock
 
     int optimize;
     int q_index;
-    int increase_denoising;
 
 #if CONFIG_TEMPORAL_DENOISING
+    int increase_denoising;
     MB_PREDICTION_MODE best_sse_inter_mode;
     int_mv best_sse_mv;
     MV_REFERENCE_FRAME best_reference_frame;