(svn r16350) -Codechange: make some 'rail track is present' checks more 'secure'

src/elrail.cpp

@@ -116,7 +116,7 @@ static TrackBits GetRailTrackBitsUniversal(TileIndex t, byte *override)
  */
 static TrackBits MaskWireBits(TileIndex t, TrackBits tracks)
 {
-	if (!IsPlainRail(t)) return tracks;
+	if (!IsPlainRailTile(t)) return tracks;
 
 	TrackdirBits neighbour_tdb = TRACKDIR_BIT_NONE;
 	for (DiagDirection d = DIAGDIR_BEGIN; d < DIAGDIR_END; d++) {

src/rail_cmd.cpp

@@ -827,7 +827,7 @@ CommandCost CmdBuildSingleSignal(TileIndex tile, DoCommandFlag flags, uint32 p1,
 
 	/* You can only build signals on plain rail tiles, and the selected track must exist */
 	if (!ValParamTrackOrientation(track) || !IsPlainRailTile(tile) ||
-			!EnsureNoTrainOnTrack(tile, track) || !HasTrack(tile, track)) {
+			!HasTrack(tile, track) || !EnsureNoTrainOnTrack(tile, track)) {
 		return CMD_ERROR;
 	}