Merge "Fix memory leak where we close the descriptor instead of the file."

    NPE_CHECK_RETURN_ZERO(env, fileDescriptor);

    jint descriptor = jniGetFDFromFileDescriptor(env, fileDescriptor);

    int descriptor = jniGetFDFromFileDescriptor(env, fileDescriptor);

    struct stat fdStat;

    if (fstat(descriptor, &fdStat) == -1) {

        return nullObjectReturn("fstat return -1");

    }

    // Restore the descriptor's offset on exiting this function.

    // Restore the descriptor's offset on exiting this function. Even though

    // we dup the descriptor, both the original and dup refer to the same open

    // file description and changes to the file offset in one impact the other.

    AutoFDSeek autoRestore(descriptor);

    FILE* file = fdopen(descriptor, "r");

    // Duplicate the descriptor here to prevent leaking memory. A leak occurs

    // if we only close the file descriptor and not the file object it is used to

    // create.  If we don't explicitly clean up the file (which in turn closes the

    // descriptor) the buffers allocated internally by fseek will be leaked.

    int dupDescriptor = dup(descriptor);

    FILE* file = fdopen(dupDescriptor, "r");

    if (file == NULL) {

        // cleanup the duplicated descriptor since it will not be closed when the

        // file is cleaned up (fclose).

        close(dupDescriptor);

        return nullObjectReturn("Could not open file");

    }

    SkAutoTUnref<SkFILEStream> fileStream(new SkFILEStream(file,

                         SkFILEStream::kCallerRetains_Ownership));

                         SkFILEStream::kCallerPasses_Ownership));

    // Use a buffered stream. Although an SkFILEStream can be rewound, this

    // ensures that SkImageDecoder::Factory never rewinds beyond the