From 783b1d1c113c5eba71f3c487fd70955c75608ba0 Mon Sep 17 00:00:00 2001
From: Nico Weber <thakis@chromium.org>
Date: Thu, 22 Feb 2024 09:41:58 -0500
Subject: [PATCH] LibPDF: Use is_ascii_hex_digit() instead of isxdigit()

See description of #7684 for motivation.

Also, makes this code look more like the hex code in
Filter::decode_ascii_hex().

No behavior change.
---
 Userland/Libraries/LibPDF/Parser.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Userland/Libraries/LibPDF/Parser.cpp b/Userland/Libraries/LibPDF/Parser.cpp
index 30cc6d95dc..12fcf2e4b6 100644
--- a/Userland/Libraries/LibPDF/Parser.cpp
+++ b/Userland/Libraries/LibPDF/Parser.cpp
@@ -221,7 +221,7 @@ PDFErrorOr<NonnullRefPtr<NameObject>> Parser::parse_name()
             int hex_value = 0;
             for (int i = 0; i < 2; i++) {
                 auto ch = m_reader.consume();
-                VERIFY(isxdigit(ch));
+                VERIFY(is_ascii_hex_digit(ch));
                 hex_value *= 16;
                 if (ch <= '9') {
                     hex_value += ch - '0';
@@ -370,7 +370,7 @@ PDFErrorOr<ByteString> Parser::parse_hex_string()
                     return builder.to_byte_string();
                 }
 
-                if (!isxdigit(ch))
+                if (!is_ascii_hex_digit(ch))
                     return error("character in hex string isn't hex digit");
 
                 hex_value *= 16;