Problem with ssh_pki_import_pubkey_file function

[Игорь Коваленко <igor.a.kovalenko@xxxxxxxxx>]

Hello!

I'm trying to create a libssh server with public key authentication and
I've got an error in ssh_pki_import_pubkey_file function during handling
SSH_REQUEST_AUTH (see mark // <-- on a line below)
pki.c:
int ssh_pki_import_pubkey_file(const char *filename, ssh_key *pkey)
{
    file = fopen(filename, "r");
    ...
    rc = fstat(fileno(file), &sb);
    ...
    size = fread(key_buf, 1, sb.st_size, file);

    if (size != sb.st_size) {   // <--- error is here - different sizes!
        SAFE_FREE(key_buf);
        ssh_pki_log("Error reading %s: %s", filename, strerror(errno));
        return SSH_ERROR;
    }
    ...
}
If I change fopen's mode to "rb" then ssh_pki_import_pubkey_file call will
be successful.
I'm using VisualStudio 2013
The public key file was generated with ssh-keygen.exe.
It seems that with "r" mode file is opened in text mode by default and
according to MSDN  (here
<https://msdn.microsoft.com/query/dev12.query?appId=Dev12IDEF1&l=EN-US&k=k(stdio%2Ffopen);k(fopen);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true>)
in such a case some translations are performed during read operation.
Would not it be better for compatibility issues to use fopen with "rb" mode?