interferometer: initialize reverse API setting

Initialize m_useReverseAPI to false when resetting Interferometer settings
to their defaults. The member was not initialized by the constructor or
resetToDefaults(), allowing its value to be read before being set.

Detected by cppcheck.

Signed-off-by: Robin Getz <rgetz503@gmail.com>

plugins/channelmimo/interferometer/interferometersettings.cpp

@@ -47,6 +47,7 @@ void InterferometerSettings::resetToDefaults()
     m_reverseAPIPort = 8888;
     m_reverseAPIDeviceIndex = 0;
     m_reverseAPIChannelIndex = 0;
+    m_useReverseAPI = false;
     m_workspaceIndex = 0;
     m_hidden = false;
 }