(svn r17483) -Fix (r17405): when an aircraft starts flying in circles make it turn in the correct direction first before continuing

src/aircraft.h

@@ -92,6 +92,7 @@ struct Aircraft : public SpecializedVehicle<Aircraft, VEH_AIRCRAFT> {
 	StationID targetairport;
 	byte state;
 	DirectionByte last_direction;
+	byte number_consecutive_turns;
 
 	/** We don't want GCC to zero our struct! It already is zeroed and has an index! */
 	Aircraft() : SpecializedVehicle<Aircraft, VEH_AIRCRAFT>() {}