Fix #4204: Client trying to get sprite 65535

Caused by a conflict between a multiplayer map download and the title loading a different map.

src/game.c

@@ -806,13 +806,13 @@ bool game_load_save(const utf8 *path)
 	SDL_RWclose(rw);
 
 	if (result) {
+		if (network_get_mode() == NETWORK_MODE_CLIENT) {
+			network_close();
+		}
 		game_load_init();
 		if (network_get_mode() == NETWORK_MODE_SERVER) {
 			network_send_map();
 		}
-		if (network_get_mode() == NETWORK_MODE_CLIENT) {
-			network_close();
-		}
 		return true;
 	} else {
 		// If loading the SV6 or SV4 failed, the current park state will be corrupted
@@ -851,6 +851,10 @@ void game_load_init()
 	mainWindow->saved_view_y -= mainWindow->viewport->view_height >> 1;
 	window_invalidate(mainWindow);
 
+	if (network_get_mode() != NETWORK_MODE_CLIENT)
+	{
+		reset_sprite_spatial_index();
+	}
 	reset_all_sprite_quadrant_placements();
 	scenery_set_default_placement_configuration();
 	window_new_ride_init_vars();

src/rct2/S6Importer.cpp

@@ -366,11 +366,6 @@ void S6Importer::Import()
         throw ObjectLoadException();
     }
     map_update_tile_pointers();
-    reset_all_sprite_quadrant_placements();
-    if (network_get_mode() != NETWORK_MODE_CLIENT)
-    {
-        reset_sprite_spatial_index();
-    }
     game_convert_strings_to_utf8();
     if (FixIssues)
     {

src/scenario.c

@@ -119,6 +119,9 @@ int scenario_load_and_play_from_path(const char *path)
 	if (!scenario_load(path))
 		return 0;
 
+	reset_sprite_spatial_index();
+	reset_all_sprite_quadrant_placements();
+
 	int len = strnlen(path, MAX_PATH) + 1;
 	safe_strcpy(_scenarioPath, path, len);
 	if (len - 1 == MAX_PATH)

src/title.c

@@ -209,6 +209,7 @@ static int title_load_park(const char *path)
 	}
 
 	window_invalidate(w);
+	reset_sprite_spatial_index();
 	reset_all_sprite_quadrant_placements();
 	window_new_ride_init_vars();
 	if (_strcmpi(path_get_extension(path), ".sv6") != 0)