move reinterpret_cast into SK_PREFETCH

src/opts/SkBlurImageFilter_opts.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkBlurImageFilter_opts_DEFINED
 #define SkBlurImageFilter_opts_DEFINED
 
@@ skipping 191 matching lines @@
             if (x >= leftOffset) {
                 SkColor l = *(sptr - leftOffset * srcStrideX);
                 DECREMENT_SUMS(l);
             }
             if (x + rightOffset + 1 < width) {
                 SkColor r = *(sptr + (rightOffset + 1) * srcStrideX);
                 INCREMENT_SUMS(r);
             }
             sptr += srcStrideX;
             if (srcDirection == BlurDirection::kY) {
-                SK_PREFETCH(reinterpret_cast<const char*>(sptr + (rightOffset + 1) * srcStrideX));
+                SK_PREFETCH(sptr + (rightOffset + 1) * srcStrideX);
             }
             dptr += dstStrideX;
         }
         src += srcStrideY;
         dst += dstStrideY;
     }
 }
 
 static auto box_blur_xx = &box_blur<BlurDirection::kX, BlurDirection::kX>,
             box_blur_xy = &box_blur<BlurDirection::kX, BlurDirection::kY>,
             box_blur_yx = &box_blur<BlurDirection::kY, BlurDirection::kX>;
 
 }  // namespace SK_OPTS_NS
 
 #endif