fix interior door errors when reloading maps

docs/release-notes.md

@@ -8,8 +8,9 @@
 -->
 
 ## Upcoming release
-* For the Error Handler mod:
-  * Disabled 'patched game code' warning.
+* For players:
+  * Fixed _tile contains an invalid TileSheet reference_ errors when mods change certain maps.
+  * Fixed _patched game code_ issue shown for the bundled ErrorHandler mod.
 
 ## 3.9
 Released 22 January 2021 for Stardew Valley 1.5.4 or later. See [release highlights](https://www.patreon.com/posts/46553874).

src/SMAPI/Metadata/CoreAssetPropagator.cs

@@ -785,6 +785,7 @@ namespace StardewModdingAPI.Metadata
         private void ReloadMap(GameLocation location)
         {
             // reload map
+            location.interiorDoors.Clear(); // prevent errors when doors try to update tiles which no longer exist
             location.reloadMap();
             location.updateWarps();
             location.MakeMapModifications(force: true);