cpplint issue in vp9_rdopt.h

Change-Id: I84209d382ca5dfc537ee533cd792d8caa0e25cee

vp9/encoder/vp9_rdopt.h

@@ -12,7 +12,8 @@
 #ifndef VP9_ENCODER_VP9_RDOPT_H_
 #define VP9_ENCODER_VP9_RDOPT_H_
 
-#define RDCOST(RM,DM,R,D) ( ((128+((int64_t)R)*(RM)) >> 8) + ((int64_t)DM)*(D) )
+#define RDCOST(RM, DM, R, D) \
+  (((128 + ((int64_t)R) * (RM)) >> 8) + ((int64_t)DM) * (D))
 #define QIDX_SKIP_THRESH     115
 
 void vp9_initialize_rd_consts(VP9_COMP *cpi, int qindex);