extras landing_target: fix #2080 fov vector init

Signed-off-by: Vladimir Ermakov <[email protected]>

Author: vooon

mavros_extras/src/plugins/landing_target.cpp

@@ -315,7 +315,7 @@ class LandingTargetPlugin : public plugin::Plugin,
 
     Eigen::Vector2f angle;
     Eigen::Vector2f size_rad;
-    Eigen::Vector2f fov;
+    Eigen::Vector2f fov(fov_x, fov_y);
 
     // the norm of the position vector is considered the distance to the landing target
     float distance = pos.norm();