Fix SkJpegCodec::onSkipScanlines when TURBO_HAS_SKIP is not defined

src/codec/SkJpegCodec.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCodec.h"
 #include "SkMSAN.h"
 #include "SkJpegCodec.h"
@@ skipping 335 matching lines @@
     }
     SkASSERT(nullptr != decoderMgr);
     fDecoderMgr.reset(decoderMgr);
 
     fSwizzler.reset(nullptr);
     fSwizzleSrcRow = nullptr;
     fColorXformSrcRow = nullptr;
     fStorage.reset();
     fColorXform.reset(nullptr);
 
+#if !defined(TURBO_HAS_SKIP)
+    fSkipStorage.reset();
+#endif
+
     return true;
 }
 
 /*
  * Checks if the conversion between the input image and the requested output
  * image has been implemented
  * Sets the output color space
  */
 bool SkJpegCodec::setOutputColorSpace(const SkImageInfo& dstInfo, bool needsColorXform) {
     if (kUnknown_SkAlphaType == dstInfo.alphaType()) {
@@ skipping 415 matching lines @@
 
 bool SkJpegCodec::onSkipScanlines(int count) {
     // Set the jump location for libjpeg errors
     if (setjmp(fDecoderMgr->getJmpBuf())) {
         return fDecoderMgr->returnFalse("onSkipScanlines");
     }
 
 #ifdef TURBO_HAS_SKIP
     return (uint32_t) count == jpeg_skip_scanlines(fDecoderMgr->dinfo(), count);
 #else
-    if (!fSwizzleSrcRow) {
-        fStorage.reset(get_row_bytes(fDecoderMgr->dinfo()));
-        fSwizzleSrcRow = fStorage.get();
+    uint8_t* ptr = fSkipStorage.get();
+    if (!ptr) {
+        fSkipStorage.reset(get_row_bytes(fDecoderMgr->dinfo()));
+        ptr = fSkipStorage.get();
     }
 
     for (int y = 0; y < count; y++) {
-        if (1 != jpeg_read_scanlines(fDecoderMgr->dinfo(), &fSwizzleSrcRow, 1)) {
+        if (1 != jpeg_read_scanlines(fDecoderMgr->dinfo(), &ptr, 1)) {
             return false;
         }
     }
     return true;
 #endif
 }
 
 static bool is_yuv_supported(jpeg_decompress_struct* dinfo) {
     // Scaling is not supported in raw data mode.
     SkASSERT(dinfo->scale_num == dinfo->scale_denom);
@@ skipping 184 matching lines @@
 
         JDIMENSION linesRead = jpeg_read_raw_data(dinfo, yuv, numRowsPerBlock);
         if (linesRead < remainingRows) {
             // FIXME: Handle incomplete YUV decodes without signalling an error.
             return kInvalidInput;
         }
     }
 
     return kSuccess;
 }