[LyX/master] Rename another shadowing unsigned

[Juergen Spitzmueller]

commit 0111d1b5d2ba79e0d8fc7ed8fb18d8a1d8ce0f8c
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Fri Feb 20 15:55:07 2026 +0100

    Rename another shadowing unsigned
---
 src/insets/InsetIndex.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/insets/InsetIndex.cpp b/src/insets/InsetIndex.cpp
index e0348be87a..0df95366e4 100644
--- a/src/insets/InsetIndex.cpp
+++ b/src/insets/InsetIndex.cpp
@@ -1775,10 +1775,10 @@ void outputIndexPage(XMLStream & xs, const IndexNode* root_node, unsigned depth
 		xs << XMLStream::ESCAPE_NONE << " — "; // Em dash, i.e. long (---).
 		unsigned entry_number = 1;
 
-		auto writeLinkToEntry = [&xs](const IndexEntry &entry, unsigned entry_number) {
+		auto writeLinkToEntry = [&xs](const IndexEntry &entry, unsigned entry_num) {
 			std::string const link_attr = "href='#" + entry.inset()->paragraphs()[0].magicLabel() + "'";
 			xs << xml::StartTag("a", link_attr);
-			xs << from_ascii(std::to_string(entry_number));
+			xs << from_ascii(std::to_string(entry_num));
 			xs << xml::EndTag("a");
 		};