Updated geo lib C/C++ interfacing

src/lib/geo/geo.h

@@ -48,10 +48,10 @@
 #include "uORB/topics/fence.h"
 #include "uORB/topics/vehicle_global_position.h"
 
-#include "geo/geo_mag_declination.h"
-
 __BEGIN_DECLS
 
+#include "geo/geo_mag_declination.h"
+
 #include <stdbool.h>
 
 #define CONSTANTS_ONE_G					9.80665f		/* m/s^2		*/

src/lib/geo/geo_mag_declination.c

@@ -43,6 +43,8 @@
 *
 */
 
+#include <geo/geo.h>
+
 
 /** set this always to the sampling in degrees for the table below */
 #define SAMPLING_RES		10