Update land info window to indicate if signal tile is restricted.

src/lang/english.txt

@@ -2712,6 +2712,8 @@ STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_NOENTRYSIGNALS        :{STRING} track
 STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PBS_NOENTRYSIGNALS          :{STRING} track with path and one-way path signals
 STR_LAI_RAIL_DESCRIPTION_TRAIN_DEPOT                            :{STRING} train depot
 
+STR_LAI_RAIL_DESCRIPTION_RESTRICTED_SIGNAL                      :{STRING1} (restricted)
+
 STR_LAI_ROAD_DESCRIPTION_ROAD                                   :Road
 STR_LAI_ROAD_DESCRIPTION_ROAD_WITH_STREETLIGHTS                 :Road with street lights
 STR_LAI_ROAD_DESCRIPTION_TREE_LINED_ROAD                        :Tree-lined road

src/misc_gui.cpp

@@ -175,6 +175,7 @@ public:
 
 		/* Tiletype */
 		SetDParam(0, td.dparam[0]);
+		SetDParam(1, td.dparam[1]);
 		GetString(this->landinfo_data[line_nr], td.str, lastof(this->landinfo_data[line_nr]));
 		line_nr++;
 

src/rail_cmd.cpp

@@ -2770,6 +2770,12 @@ static void GetTileDesc_Track(TileIndex tile, TileDesc *td)
 			}
 
 			td->str = signal_type[secondary_signal][primary_signal];
+
+			if (IsRestrictedSignal(tile)) {
+				SetDParamX(td->dparam, 0, td->str);
+				SetDParamX(td->dparam, 1, rti->strings.name);
+				td->str = STR_LAI_RAIL_DESCRIPTION_RESTRICTED_SIGNAL;
+			}
 			break;
 		}