Apply suggestion from @Copilot

Jack251970 · Copilot · web-flow · commit 130033cf4b8f · 2025-09-23T12:22:46.000+08:00
Co-authored-by: Copilot &lt;175728472+Copilot@users.noreply.github.com&gt;
diff --git a/Flow.Launcher.Infrastructure/Image/ThumbnailReader.cs b/Flow.Launcher.Infrastructure/Image/ThumbnailReader.cs
@@ -135,7 +135,7 @@ private static unsafe HBITMAP GetHBitmapForUrlFile(string fileName, int width, i
                 var iconPath = urlSection?["IconFile"];
                 if (string.IsNullOrEmpty(iconPath))
                 {
-                    throw new FileNotFoundException();
+                    throw new FileNotFoundException("Icon file not specified in Internet shortcut (.url) file.");
                 }
                 hBitmap = GetHBitmap(Path.GetFullPath(iconPath), width, height, options);
             }

Original file line number	Diff line number	Diff line change
`@@ -135,7 +135,7 @@ private static unsafe HBITMAP GetHBitmapForUrlFile(string fileName, int width, i`
`135`	`135`	`var iconPath = urlSection?["IconFile"];`
`136`	`136`	`if (string.IsNullOrEmpty(iconPath))`
`137`	`137`	`{`
`138`		`- throw new FileNotFoundException();`
	`138`	`+ throw new FileNotFoundException("Icon file not specified in Internet shortcut (.url) file.");`
`139`	`139`	`}`
`140`	`140`	`hBitmap = GetHBitmap(Path.GetFullPath(iconPath), width, height, options);`
`141`	`141`	`}`