Fix issue in AV1HighBDJNTCOMPAVGUPSAMPLEDTest

The alignment requirements of output buffer for
aom_highbd_upsampled_pred_sse2 are corrected
in AV1HighBDJNTCOMPAVGUPSAMPLEDTest.

Change-Id: Id74529bce601dc2516292b9e656b8bf626c9a147

test/comp_avg_pred_test.h

diff --git a/test/comp_avg_pred_test.h b/test/comp_avg_pred_test.h
index dd53e0a..65a0153 100644
--- a/test/comp_avg_pred_test.h
+++ b/test/comp_avg_pred_test.h
@@ -437,8 +437,8 @@
     const int bd = GET_PARAM(0);
     uint16_t pred8[kMaxSize * kMaxSize];
     uint16_t ref8[kMaxSize * kMaxSize];
-    uint16_t output[kMaxSize * kMaxSize];
-    uint16_t output2[kMaxSize * kMaxSize];
+    DECLARE_ALIGNED(16, uint16_t, output[kMaxSize * kMaxSize]);
+    DECLARE_ALIGNED(16, uint16_t, output2[kMaxSize * kMaxSize]);
 
     for (int i = 0; i < h; ++i)
       for (int j = 0; j < w; ++j) {
@@ -500,8 +500,8 @@
     const int bd = GET_PARAM(0);
     uint16_t pred8[kMaxSize * kMaxSize];
     uint16_t ref8[kMaxSize * kMaxSize];
-    uint16_t output[kMaxSize * kMaxSize];
-    uint16_t output2[kMaxSize * kMaxSize];
+    DECLARE_ALIGNED(16, uint16_t, output[kMaxSize * kMaxSize]);
+    DECLARE_ALIGNED(16, uint16_t, output2[kMaxSize * kMaxSize]);
 
     for (int i = 0; i < h; ++i)
       for (int j = 0; j < w; ++j) {