fix multi-line comment warning

source/scale_neon64.cc

 /*
  *  Copyright 2014 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 570 matching lines @@
 // TODO(Yang Zhang): Investigate less load instructions for
 // the x/dx stepping
 #define LOAD2_DATA8_LANE(n)                                    \
     "lsr        %5, %3, #16                    \n"             \
     "add        %6, %1, %5                    \n"              \
     "add        %3, %3, %4                     \n"             \
     MEMACCESS(6)                                               \
     "ld2        {v4.b, v5.b}["#n"], [%6]      \n"
 
 // The NEON version mimics this formula (from row_common.cc):
-// #define BLENDER(a, b, f) (uint8)((int)(a) + \
+// #define BLENDER(a, b, f) (uint8)((int)(a) +
 //    ((((int)((f)) * ((int)(b) - (int)(a))) + 0x8000) >> 16))
 
 void ScaleFilterCols_NEON(uint8* dst_ptr, const uint8* src_ptr,
                           int dst_width, int x, int dx) {
   int dx_offset[4] = {0, 1, 2, 3};
   int* tmp = dx_offset;
   const uint8* src_tmp = src_ptr;
   int64 dst_width64 = (int64) dst_width;  // Work around ios 64 bit warning.
   int64 x64 = (int64) x;
   int64 dx64 = (int64) dx;
@@ skipping 435 matching lines @@
 }
 
 #undef LOAD2_DATA32_LANE
 
 #endif  // !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__)
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif