Use unsigned instead of unsigned int in `Editor::selectionStartHa…

…sMarkerFor` aligning with WebKit Code Style

https://bugs.webkit.org/show_bug.cgi?id=270424

Reviewed by Fujii Hironori.

This patch is to use `unsigned` instead of `unsigned int` as per WebKit's Code Style Guidelines [1]:

[1] https://webkit.org/code-style-guidelines/#types-unsigned

* Source/WebCore/editing/Editor.cpp:
(Editor::selectionStartHasMarkerFor):

Canonical link: https://commits.webkit.org/275612@main

Source/WebCore/editing/Editor.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2020 Apple Inc. All rights reserved.
+ * Copyright (C) 2006-2024 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
@@ -4092,8 +4092,8 @@ bool Editor::selectionStartHasMarkerFor(DocumentMarker::Type markerType, int fro
     if (!markers)
         return false;
 
-    unsigned int startOffset = static_cast<unsigned int>(from);
-    unsigned int endOffset = static_cast<unsigned int>(from + length);
+    unsigned startOffset = static_cast<unsigned>(from);
+    unsigned endOffset = static_cast<unsigned>(from + length);
     for (auto& marker : markers->markersFor(*node)) {
         if (marker->startOffset() <= startOffset && endOffset <= marker->endOffset() && marker->type() == markerType)
             return true;