Release 1.25.3

Closes #354

Version.cs

@@ -6,6 +6,6 @@
 
 namespace TweetDuck {
 	internal static class Version {
-		public const string Tag = "1.25.2";
+		public const string Tag = "1.25.3";
 	}
 }

windows/TweetImpl.CefSharp/Component/BrowserComponentBase.cs

@@ -59,11 +59,15 @@ private void OnLoadError(object? sender, LoadErrorEventArgs e) {
 		}
 
 		private void OnFrameLoadStart(object? sender, FrameLoadStartEventArgs e) {
-			base.OnFrameLoadStart(e.Url, e.Frame);
+			if (!string.IsNullOrEmpty(e.Url)) {
+				base.OnFrameLoadStart(e.Url, e.Frame);
+			}
 		}
 
 		private void OnFrameLoadEnd(object? sender, FrameLoadEndEventArgs e) {
-			base.OnFrameLoadEnd(e.Url, e.Frame);
+			if (!string.IsNullOrEmpty(e.Url)) {
+				base.OnFrameLoadEnd(e.Url, e.Frame);
+			}
 		}
 	}
 }