Stop calling jpeg_finish_decompress()

src/codec/SkJpegUtility_codec.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 "SkCodecPriv.h"
 #include "SkJpegUtility_codec.h"
 
@@ skipping 43 matching lines @@
     } else {
         src->next_input_byte += numBytes;
         src->bytes_in_buffer -= numBytes;
     }
 }
 
 /*
  * We do not need to do anything to terminate our stream
  */
 static void sk_term_source(j_decompress_ptr dinfo)
-{}
+{
+    // The current implementation of SkJpegCodec does not call
+    // jpeg_finish_decompress(), so this function is never called.
+    // If we want to modify this function to do something, we also
+    // need to modify SkJpegCodec to call jpeg_finish_decompress().
+}
 
 /*
  * Constructor for the source manager that we provide to libjpeg
  * We provide skia implementations of all of the stream processing functions required by libjpeg
  */
 skjpeg_source_mgr::skjpeg_source_mgr(SkStream* stream)
     : fStream(stream)
 {
     init_source = sk_init_source;
     fill_input_buffer = sk_fill_input_buffer;
     skip_input_data = sk_skip_input_data;
     resync_to_restart = jpeg_resync_to_restart;
     term_source = sk_term_source;
 }
 
 /*
  * Call longjmp to continue execution on an error
  */
 void skjpeg_err_exit(j_common_ptr dinfo) {
     // Simply return to Skia client code
     // JpegDecoderMgr will take care of freeing memory
     skjpeg_error_mgr* error = (skjpeg_error_mgr*) dinfo->err;
     (*error->output_message) (dinfo);
     longjmp(error->fJmpBuf, 1);
 }