[Bug 44310] WritePrivateProfileString doesn't check for flush errors

https://bugs.winehq.org/show_bug.cgi?id=44310

--- Comment #10 from Omega Software  ---
That's how it's done in the rest of dlls/kernel32/tests/profile.c. See:

ret = WritePrivateProfileStringA(NULL, "key", "string", path);
    ok(ret == FALSE, "Expected FALSE, got %d\n", ret);
    ok(GetLastError() == ERROR_FILE_NOT_FOUND ||
--
    ret = WritePrivateProfileStringA(NULL, "key", "string", path);
    ok(ret == FALSE, "Expected FALSE, got %d\n", ret);
    ok(GetLastError() == ERROR_FILE_NOT_FOUND ||
--
    ret = WritePrivateProfileStringA("App", "key", "string", "");
    ok(ret == FALSE, "Expected FALSE, got %d\n", ret);
    ok(GetLastError() == ERROR_ACCESS_DENIED ||