Missing `encoding` field in class `MyStats`

[rmackinnon]

Missing encoding field in class MyStats

spandsp_fax.cpp: In function ‘std::ostream& operator<<(std::ostream&, const MyStats&)’:
spandsp_fax.cpp:796:34: error: ‘const class MyStats’ has no member named ‘encoding’
  796 |             "Encoding=" << stats.encoding << ' ' << CompressionNames[stats.encoding&3] << "\n"
      |                                  ^~~~~~~~
spandsp_fax.cpp:796:76: error: ‘const class MyStats’ has no member named ‘encoding’
  796 |             "Encoding=" << stats.encoding << ' ' << CompressionNames[stats.encoding&3] << "\n"
      |                                                                            ^~~~~~~~