(svn r15643) -Fix [FS#2711]: be more strict with zeroing unused map array bits

src/rail_map.h

@@ -607,6 +607,8 @@ static inline void MakeRailNormal(TileIndex t, Owner o, TrackBits b, RailType r)
 	_m[t].m3 = r;
 	_m[t].m4 = 0;
 	_m[t].m5 = RAIL_TILE_NORMAL << 6 | b;
+	SB(_m[t].m6, 2, 4, 0);
+	_me[t].m7 = 0;
 }
 
 
@@ -618,6 +620,8 @@ static inline void MakeRailDepot(TileIndex t, Owner o, DiagDirection d, RailType
 	_m[t].m3 = r;
 	_m[t].m4 = 0;
 	_m[t].m5 = RAIL_TILE_DEPOT << 6 | d;
+	SB(_m[t].m6, 2, 4, 0);
+	_me[t].m7 = 0;
 }
 
 
@@ -629,6 +633,8 @@ static inline void MakeRailWaypoint(TileIndex t, Owner o, Axis a, RailType r, ui
 	_m[t].m3 = r;
 	_m[t].m4 = 0;
 	_m[t].m5 = RAIL_TILE_WAYPOINT << 6 | a;
+	SB(_m[t].m6, 2, 4, 0);
+	_me[t].m7 = 0;
 }
 
 #endif /* RAIL_MAP_H */