HOTFIX: fix too agressive block culling

src/util/numeric.cpp

@@ -244,7 +244,10 @@ bool isBlockInSight(v3s16 blockpos_b, v3f camera_pos, v3f camera_dir,
 	f32 cosangle = dforward / blockpos_adj.getLength();
 
 	// If block is not in the field of view, skip it
-	if(cosangle < cos(camera_fov / 2))
+	// HOTFIX: use sligthly increased angle (+10%) to fix too agressive
+	// culling. Somebody have to find out whats wrong with the math here.
+	// Previous value: camera_fov / 2
+	if(cosangle < cos(camera_fov * 0.55))
 		return false;
 
 	return true;