Fixed compile error

src/lib/geo/geo.c

@@ -210,7 +210,7 @@ __EXPORT float get_bearing_to_next_waypoint(double lat_now, double lon_now, doub
 	return theta;
 }
 
-__EXPORT float get_vector_to_next_waypoint(double lat_now, double lon_now, double lat_next, double lon_next, float* vx, float* vy)
+__EXPORT void get_vector_to_next_waypoint(double lat_now, double lon_now, double lat_next, double lon_next, float* vx, float* vy)
 {
 	double lat_now_rad = lat_now * M_DEG_TO_RAD;
 	double lon_now_rad = lon_now * M_DEG_TO_RAD;
@@ -221,13 +221,11 @@ __EXPORT float get_vector_to_next_waypoint(double lat_now, double lon_now, doubl
 	double d_lon = lon_next_rad - lon_now_rad;
 
 	/* conscious mix of double and float trig function to maximize speed and efficiency */
-	*vy = CONSTANTS_RADIUS_OF_EARTH * sin(d_lon) * cos(lat_next_rad)
-	*vx = CONSTANTS_RADIUS_OF_EARTH * cos(lat_now_rad) * sin(lat_next_rad) - sin(lat_now_rad) * cos(lat_next_rad) * cos(d_lon));
-
-	return theta;
+	*vy = CONSTANTS_RADIUS_OF_EARTH * sin(d_lon) * cos(lat_next_rad);
+	*vx = CONSTANTS_RADIUS_OF_EARTH * cos(lat_now_rad) * sin(lat_next_rad) - sin(lat_now_rad) * cos(lat_next_rad) * cos(d_lon);
 }
 
-__EXPORT float get_vector_to_next_waypoint_fast(double lat_now, double lon_now, double lat_next, double lon_next, float* vx, float* vy)
+__EXPORT void get_vector_to_next_waypoint_fast(double lat_now, double lon_now, double lat_next, double lon_next, float* vx, float* vy)
 {
 	double lat_now_rad = lat_now * M_DEG_TO_RAD;
 	double lon_now_rad = lon_now * M_DEG_TO_RAD;
@@ -240,8 +238,6 @@ __EXPORT float get_vector_to_next_waypoint_fast(double lat_now, double lon_now,
 	/* conscious mix of double and float trig function to maximize speed and efficiency */
 	*vy = CONSTANTS_RADIUS_OF_EARTH * d_lon;
 	*vx = CONSTANTS_RADIUS_OF_EARTH * cos(lat_now_rad);
-
-	return theta;
 }
 
 // Additional functions - @author Doug Weibel <douglas.weibel@colorado.edu>

src/lib/geo/geo.h

@@ -112,9 +112,9 @@ __EXPORT float get_distance_to_next_waypoint(double lat_now, double lon_now, dou
  */
 __EXPORT float get_bearing_to_next_waypoint(double lat_now, double lon_now, double lat_next, double lon_next);
 
-__EXPORT float get_vector_to_next_waypoint(double lat_now, double lon_now, double lat_next, double lon_next, float* vx, float* vy);
+__EXPORT void get_vector_to_next_waypoint(double lat_now, double lon_now, double lat_next, double lon_next, float* vx, float* vy);
 
-__EXPORT float get_vector_to_next_waypoint_fast(double lat_now, double lon_now, double lat_next, double lon_next, float* vx, float* vy);
+__EXPORT void get_vector_to_next_waypoint_fast(double lat_now, double lon_now, double lat_next, double lon_next, float* vx, float* vy);
 
 __EXPORT int get_distance_to_line(struct crosstrack_error_s * crosstrack_error, double lat_now, double lon_now, double lat_start, double lon_start, double lat_end, double lon_end);