Use consistent paramemter type

Change-Id: I2ba5c9cb7e9ac6761ac18262564182039cfaad5b
diff --git a/vp10/encoder/x86/vp10_highbd_quantize_sse4.c b/vp10/encoder/x86/vp10_highbd_quantize_sse4.c
index a2ed7a9..c9ad5d02 100644
--- a/vp10/encoder/x86/vp10_highbd_quantize_sse4.c
+++ b/vp10/encoder/x86/vp10_highbd_quantize_sse4.c
@@ -119,7 +119,7 @@
                                     uint16_t *eob_ptr,
                                     const int16_t *scan,
                                     const int16_t *iscan,
-                                    const int log_scale) {
+                                    int log_scale) {
   __m128i coeff[2], qcoeff[2], dequant[2], qparam[3], coeff_sign;
   __m128i eob = _mm_setzero_si128();
   const tran_low_t *src = coeff_ptr;