Apply WhereNotNullOrWhiteSpace and Clamp from PowerKit

Agent-Logs-Url: https://github.com/Tyrrrz/YoutubeExplode/sessions/f3f87da8-cc96-49a0-ac22-283a67f732dd

Co-authored-by: Tyrrrz <[email protected]>

Author: Copilot

YoutubeExplode.Converter/FFmpeg.cs

@@ -135,11 +135,9 @@ private static PipeTarget CreateProgressRouter(IProgress<double> progress)
                     + TimeSpan.FromSeconds(seconds);
 
                 progress.Report(
-                    Math.Clamp(
-                        processedDuration.TotalMilliseconds / totalDuration.Value.TotalMilliseconds,
-                        0,
-                        1
-                    )
+                    (
+                        processedDuration.TotalMilliseconds / totalDuration.Value.TotalMilliseconds
+                    ).Clamp(0, 1)
                 );
             }
         });

YoutubeExplode/Bridge/VideoWatchPage.cs

@@ -92,7 +92,8 @@ along with ([\d,\.]+) other people"
             .GetElementsByTagName("script")
             .Select(e => e.Text())
             .Select(s => Regex.Match(s, @"ytplayer\.config\s*=\s*(\{.*\})").Groups[1].Value)
-            .FirstOrDefault(s => !string.IsNullOrWhiteSpace(s))
+            .WhereNotNullOrWhiteSpace()
+            .FirstOrDefault()
             ?.Pipe(Json.Extract)
             .Pipe(Json.TryParse);
 
@@ -104,7 +105,8 @@ along with ([\d,\.]+) other people"
             .Select(s =>
                 Regex.Match(s, @"var\s+ytInitialPlayerResponse\s*=\s*(\{.*\})").Groups[1].Value
             )
-            .FirstOrDefault(s => !string.IsNullOrWhiteSpace(s))
+            .WhereNotNullOrWhiteSpace()
+            .FirstOrDefault()
             ?.Pipe(Json.Extract)
             .Pipe(Json.TryParse)
             ?.Pipe(j => new PlayerResponse(j))