Fix testi420 unittest for odd height

unit_test/color_test.cc

 /*
  *  Copyright 2015 The LibYuv Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS. All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 63 matching lines @@
       p += 2;                                                                  \
     }                                                                          \
     if (benchmark_width_ & 1) {                                                \
       uint8 r = static_cast<uint8>(fastrand());                                \
       p[0] = r;                                                                \
       p[HN] = r;                                                               \
       p += 1;                                                                  \
     }                                                                          \
     p += HN;                                                                   \
   }                                                                            \
-                                                                               \
+  if ((benchmark_height_ & 1) && HS == 2) {                                    \
+    for (int x = 0; x < benchmark_width_ - 1; x += 2) {                        \
+      uint8 r = static_cast<uint8>(fastrand());                                \
+      p[0] = r;                                                                \
+      p[1] = r;                                                                \
+      p += 2;                                                                  \
+    }                                                                          \
+    if (benchmark_width_ & 1) {                                                \
+      uint8 r = static_cast<uint8>(fastrand());                                \
+      p[0] = r;                                                                \
+      p += 1;                                                                  \
+    }                                                                          \
+  }                                                                            \
   /* Start with YUV converted to ARGB. */                                      \
   YUVTOARGB(orig_y, benchmark_width_,                                          \
             orig_u, (benchmark_width_ + 1) / 2,                                \
             orig_v, (benchmark_width_ + 1) / 2,                                \
             orig_pixels, benchmark_width_ * 4,                                 \
             benchmark_width_, benchmark_height_);                              \
                                                                                \
   ARGBTOYUV(orig_pixels, benchmark_width_ * 4,                                 \
             temp_y, benchmark_width_,                                          \
             temp_u, (benchmark_width_ + 1) / 2,                                \
@@ skipping 454 matching lines @@
     EXPECT_EQ(r0, r1);
     EXPECT_EQ(g0, g1);
     EXPECT_EQ(b0, b1);
     EXPECT_EQ(r0, r2);
     EXPECT_EQ(g0, g2);
     EXPECT_EQ(b0, b2);
   }
 }
 
 }  // namespace libyuv