(svn r11414) -Fix [FS#1387]: when building a station, even though we already 'know' it in memory, it should still be unknown in the realm of callbacks.

src/station_cmd.cpp

@@ -1042,7 +1042,9 @@ CommandCost CmdBuildRailroadStation(TileIndex tile_org, uint32 flags, uint32 p1,
 				if (statspec != NULL) {
 					/* Use a fixed axis for GetPlatformInfo as our platforms / numtracks are always the right way around */
 					uint32 platinfo = GetPlatformInfo(AXIS_X, 0, plat_len, numtracks_orig, plat_len - w, numtracks_orig - numtracks, false);
-					uint16 callback = GetStationCallback(CBID_STATION_TILE_LAYOUT, platinfo, 0, statspec, st, tile);
+
+					/* As the station is not yet completely finished, the station does not yet exist. */
+					uint16 callback = GetStationCallback(CBID_STATION_TILE_LAYOUT, platinfo, 0, statspec, NULL, tile);
 					if (callback != CALLBACK_FAILED && callback < 8) SetStationGfx(tile, (callback & ~1) + axis);
 				}