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Merge "vpx_idct32x32_1024_add_neon: quiet uninitialized warning"

--- a/vpx_dsp/arm/idct32x32_add_neon.c

+++ b/vpx_dsp/arm/idct32x32_add_neon.c

@@ -430,21 +430,20 @@

   int16_t trans_buf[32 * 8];

   int16_t pass1[32 * 32];

   int16_t pass2[32 * 32];

-  int16_t *in, *out;

+  const int16_t *input_pass2 = pass1;  // input of pass2 is the result of pass1

+  int16_t *out;

   int16x8_t q0s16, q1s16, q2s16, q3s16, q4s16, q5s16, q6s16, q7s16;

   int16x8_t q8s16, q9s16, q10s16, q11s16, q12s16, q13s16, q14s16, q15s16;

   for (idct32_pass_loop = 0, out = pass1; idct32_pass_loop < 2;

-       idct32_pass_loop++,

-      in = pass1,  // the input of pass2 is the result of pass1

-       out = pass2) {

+       idct32_pass_loop++, out = pass2) {

     for (i = 0; i < 4; i++, out += 8) {  // idct32_bands_loop

       if (idct32_pass_loop == 0) {

         idct32_transpose_pair_tran_low(input, trans_buf);

         input += 32 * 8;

       } else {

-        idct32_transpose_pair(in, trans_buf);

-        in += 32 * 8;

+        idct32_transpose_pair(input_pass2, trans_buf);

+        input_pass2 += 32 * 8;

       }

       // -----------------------------------------