Index: aircraft_cmd.c
===================================================================
--- aircraft_cmd.c	(revision 3728)
+++ aircraft_cmd.c	(working copy)
@@ -1609,7 +1609,6 @@
 {
 	AirportFTA *current;
 	byte prev_pos;
-	bool retval = false;
 
 	// error handling
 	if (v->u.air.pos >= Airport->nofelements) {
@@ -1633,7 +1632,7 @@
 		if (AirportSetBlocks(v, current, Airport)) {
 			v->u.air.pos = current->next_position;
 		} // move to next position
-		return retval;
+		return false;
 	}
 
 	// there are more choices to choose from, choose the one that
@@ -1643,7 +1642,7 @@
 			if (AirportSetBlocks(v, current, Airport)) {
 				v->u.air.pos = current->next_position;
 			} // move to next position
-			return retval;
+			return false;
 		}
 		current = current->next_in_chain;
 	} while (current != NULL);