Apply suggestions from code review

Co-authored-by: BaronGreenback <jimcartlidge@yahoo.co.uk>

Emby.Naming/AudioBook/AudioBookListResolver.cs

@@ -33,7 +33,7 @@ namespace Emby.Naming.AudioBook
         {
             var audioBookResolver = new AudioBookResolver(_options);
 
-            // File with empty fullname will be sorted out here
+            // File with empty fullname will be sorted out here.
             var audiobookFileInfos = files
                 .Select(i => audioBookResolver.Resolve(i.FullName))
                 .OfType<AudioBookFileInfo>()
@@ -139,8 +139,8 @@ namespace Emby.Naming.AudioBook
 
         private AudioBookFileInfo FindMainAudioBookFile(List<AudioBookFileInfo> files, string name)
         {
-            var main = files.Find(x => Path.GetFileNameWithoutExtension(x.Path) == name);
-            main ??= files.FirstOrDefault(x => Path.GetFileNameWithoutExtension(x.Path) == "audiobook");
+            var main = files.Find(x => Path.GetFileNameWithoutExtension(x.Path).Equals(name));
+            main ??= files.FirstOrDefault(x => Path.GetFileNameWithoutExtension(x.Path).Equals("audiobook"));
             main ??= files.OrderBy(x => x.Container)
                 .ThenBy(x => x.Path)
                 .First();

Emby.Naming/Video/VideoListResolver.cs

@@ -147,7 +147,7 @@ namespace Emby.Naming.Video
             }
 
             // If there's only one video, accept all trailers
-            // Be lenient because people use all kinds of mishmash conventions with trailers
+            // Be lenient because people use all kinds of mishmash conventions with trailers.
             if (list.Count == 1)
             {
                 var trailers = remainingFiles
@@ -231,7 +231,7 @@ namespace Emby.Naming.Video
                 testFilename = testFilename.Substring(folderName.Length).Trim();
                 return string.IsNullOrEmpty(testFilename)
                    || testFilename[0] == '-'
-                   || testFilename[0] == '_'
+                   || testFilename[0].Equals( '_')
                    || string.IsNullOrWhiteSpace(Regex.Replace(testFilename, @"\[([^]]*)\]", string.Empty));
             }