From 4b906c1e5fa3f17e509abcd0890477328cf1cfa2 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <icculus@icculus.org>
Date: Thu, 14 Aug 2014 21:33:24 -0400
Subject: [PATCH] Short circuit case-insensitive compare of two equal Unicode
 codepoints.

---
 src/physfs_unicode.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/physfs_unicode.c b/src/physfs_unicode.c
index 64cff474..eb7d89bb 100644
--- a/src/physfs_unicode.c
+++ b/src/physfs_unicode.c
@@ -447,6 +447,10 @@ static void locate_case_fold_mapping(const PHYSFS_uint32 from,
 static int utf8codepointcmp(const PHYSFS_uint32 cp1, const PHYSFS_uint32 cp2)
 {
     PHYSFS_uint32 folded1[3], folded2[3];
+
+    if (cp1 == cp2)
+        return 0;  /* obviously matches. */
+
     locate_case_fold_mapping(cp1, folded1);
     locate_case_fold_mapping(cp2, folded2);