Fix a Coverity UNINIT warning in RadioAstronomyGUI::update2DImage()
where the intensity variable could be used uninitialized if
m_powerYUnits contained an unexpected value and followed the default path.
Handle the default switch case by logging a warning and falling back
to fft->m_totalPowerdBFS, ensuring intensity is always initialized
before being used while providing diagnostics for invalid enum values.
Fixes Coverity CID 649242.
Signed-off-by: Robin Getz <rgetz503@gmail.com>
Robin Getz
1270f27ebf