mmMarkerHomography - Make initial variables consistent.

The value is hard-coded to 1 in the .cpp file, so we might as well
make it consistent.

Author: david-cattermole

src/mmSolver/cmd/MMMarkerHomographyCmd.h

@@ -59,7 +59,7 @@ class MMMarkerHomographyCmd : public MPxCommand {
         , m_sensor_width_mm_b(1.0)
         , m_sensor_height_mm_b(1.0)
         , m_frame_a(1)
-        , m_frame_b(10){};
+        , m_frame_b(1){};
 
     virtual ~MMMarkerHomographyCmd();