Switch SkAutoMalloc to SkAutoTMalloc to avoid cast

tests/TextureCompressionTest.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkData.h"
 #include "SkEndian.h"
 #include "SkImageInfo.h"
+#include "SkTemplates.h"
 #include "SkTextureCompressor.h"
 #include "Test.h"
 
 // TODO: Create separate tests for RGB and RGBA data once
 // ASTC and ETC1 decompression is implemented.
 
 static bool decompresses_a8(SkTextureCompressor::Format fmt) {
     switch (fmt) {
         case SkTextureCompressor::kLATC_Format:
         case SkTextureCompressor::kR11_EAC_Format:
@@ skipping 107 matching lines @@
                 if ((x ^ y) & 1) {
                     pixels[x] = 0xFF;
                 } else {
                     pixels[x] = 0;
                 }
             }
             pixels += pixmap.rowBytes();
         }
     }
 
-    SkAutoMalloc decompMemory(kWidth*kHeight);
-    uint8_t* decompBuffer = reinterpret_cast<uint8_t*>(decompMemory.get());
+    SkAutoTMalloc<uint8_t> decompMemory(kWidth*kHeight);
+    uint8_t* decompBuffer = decompMemory.get();
     REPORTER_ASSERT(reporter, decompBuffer);
     if (nullptr == decompBuffer) {
         return;
     }
 
     for (int i = 0; i < SkTextureCompressor::kFormatCnt; ++i) {
         const SkTextureCompressor::Format fmt = static_cast<SkTextureCompressor::Format>(i);
 
         // Ignore formats for RGBA data, since the decompressed buffer
         // won't match the size and contents of the original.
@@ skipping 115 matching lines @@
                 (kIndex << 28) | (kIndex << 31) | (kIndex << 34) | (kIndex << 37) |
                 (kIndex << 40) | (kIndex << 43) | (kIndex << 46) | (kIndex << 49) |
                 (kIndex << 52) | (kIndex << 55) | (kIndex << 58) | (kIndex << 61));
 
         const uint64_t* blockPtr = reinterpret_cast<const uint64_t*>(latcData->data());
         for (size_t i = 0; i < (kSizeToBe/8); ++i) {
             REPORTER_ASSERT(reporter, blockPtr[i] == kConstColorEncoding);
         }
     }
 }