fix local episode metadata update (#379)

CHANGELOG.md

@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
+### Fixed
+- Fix local television scanner to properly update episode metadata when NFO files have been added/changed
 
 ## [0.0.59-alpha] - 2021-09-18
 ### Added

ErsatzTV.Core/Metadata/LocalMetadataProvider.cs

@@ -206,12 +206,12 @@ namespace ErsatzTV.Core.Metadata
                 updated = await _metadataRepository.Add(metadata) || updated;
             }
 
-            foreach (EpisodeMetadata metadata in toUpdate)
+            foreach (EpisodeMetadata existing in toUpdate)
             {
-                Option<EpisodeMetadata> maybeExisting =
-                    episode.EpisodeMetadata.Find(em => em.EpisodeNumber == metadata.EpisodeNumber);
-                updated = await maybeExisting.Match(
-                    async existing =>
+                Option<EpisodeMetadata> maybeIncoming =
+                    episodeMetadata.Find(em => em.EpisodeNumber == existing.EpisodeNumber);
+                updated = await maybeIncoming.Match(
+                    async metadata =>
                     {
                         existing.Outline = metadata.Outline;
                         existing.Plot = metadata.Plot;