Fix SkJpegCodec::onSkipScanlines when TURBO_HAS_SKIP is not defined

src/codec/SkJpegCodec.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 SkJpegCodec_DEFINED
 #define SkJpegCodec_DEFINED
 
+// For testing.
+#ifdef SKNX_NO_SIMD
+#undef TURBO_HAS_CROP
+#undef TURBO_HAS_SKIP
+#undef TURBO_HAS_565
+#endif
+
 #include "SkCodec.h"
 #include "SkColorSpace.h"
 #include "SkColorSpaceXform.h"
 #include "SkImageInfo.h"
 #include "SkSwizzler.h"
 #include "SkStream.h"
 #include "SkTemplates.h"
 
 class JpegDecoderMgr;
 
@@ skipping 113 matching lines @@
     // libjpeg-turbo provides some subsetting.  In the case that libjpeg-turbo
     // cannot take the exact the subset that we need, we will use the swizzler
     // to further subset the output from libjpeg-turbo.
     SkIRect                            fSwizzlerSubset;
 
     SkAutoTDelete<SkSwizzler>          fSwizzler;
     std::unique_ptr<SkColorSpaceXform> fColorXform;
     
     sk_sp<SkData>                      fICCData;
 
+#if !defined(TURBO_HAS_SKIP)
+    SkAutoTMalloc<uint8_t>             fSkipStorage;
+#endif
+
     typedef SkCodec INHERITED;
 };
 
 #endif