add note to removeManeuver()

src/game.cpp

@@ -159,10 +159,11 @@ void
 removeManeuver(GameOrbit* orbit)
 {
 	assert(orbit);
+	// TODO: multiple maneuver nodes
+	// NOTE: implicitly sets orbit->maneuver.active to false
+	orbit->maneuver = {0};
+}
 
-	if (orbit->maneuver.active) {
-		orbit->maneuver = {0};
-	}
 }