Fix SkJpegCodec::onSkipScanlines when TURBO_HAS_SKIP is not defined

src/codec/SkJpegCodec.cpp

Index: src/codec/SkJpegCodec.cpp
diff --git a/src/codec/SkJpegCodec.cpp b/src/codec/SkJpegCodec.cpp
index 2eea46bb2bb07caa64fc0c6cbc2a396769064e5f..8096a29f49866ebd21a0bc1234ea8e0215b68d19 100644
--- a/src/codec/SkJpegCodec.cpp
+++ b/src/codec/SkJpegCodec.cpp
@@ -353,6 +353,10 @@ bool SkJpegCodec::onRewind() {
     fStorage.reset();
     fColorXform.reset(nullptr);
 
+#if !defined(TURBO_HAS_SKIP)
+    fSkipStorage.reset();
+#endif
+
     return true;
 }
 
@@ -788,13 +792,14 @@ bool SkJpegCodec::onSkipScanlines(int count) {
 #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;
         }
     }