quantize.c: int->uint32_t for absolute values

Change-Id: I784f32e0e86d873655e46cf68c5c124a698af361

aom_dsp/quantize.c

@@ -416,7 +416,7 @@ void aom_highbd_quantize_dc(const tran_low_t *coeff_ptr, int n_coeffs,
     const int coeff_sign = (coeff >> 31);
     const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
     const int64_t tmp = abs_coeff + round_ptr[0];
-    const int abs_qcoeff = (int)((tmp * quant) >> 16);
+    const uint32_t abs_qcoeff = (uint32_t)((tmp * quant) >> 16);
     qcoeff_ptr[0] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign);
     dqcoeff_ptr[0] = qcoeff_ptr[0] * dequant_ptr;
     if (abs_qcoeff) eob = 0;
@@ -468,7 +468,7 @@ void aom_highbd_quantize_dc_32x32(const tran_low_t *coeff_ptr, int skip_block,
     const int coeff_sign = (coeff >> 31);
     const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
     const int64_t tmp = abs_coeff + ROUND_POWER_OF_TWO(round_ptr[0], 1);
-    const int abs_qcoeff = (int)((tmp * quant) >> 15);
+    const uint32_t abs_qcoeff = (uint32_t)((tmp * quant) >> 15);
     qcoeff_ptr[0] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign);
     dqcoeff_ptr[0] = qcoeff_ptr[0] * dequant_ptr / 2;
     if (abs_qcoeff) eob = 0;