From f86cffd8e6cacb09cf59c27423c7e82c0e024aaa Mon Sep 17 00:00:00 2001
From: Alexander Holland <alexander.holland@live.de>
Date: Thu, 5 May 2016 13:34:15 +0200
Subject: fix percent decode utf8 error

---
 core/ustring.cpp | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/core/ustring.cpp b/core/ustring.cpp
index 573c362389..730f7cfa3b 100644
--- a/core/ustring.cpp
+++ b/core/ustring.cpp
@@ -3629,13 +3629,14 @@ String String::percent_decode() const {
 
 	CharString pe;
 
-	for(int i=0;i<length();i++) {
-
-		uint8_t c=operator[](i);
+	CharString cs = utf8();
+	for(int i=0;i<cs.length();i++) {
+		
+		uint8_t c = cs[i];
 		if (c=='%' && i<length()-2) {
 
-			uint8_t a = LOWERCASE(operator[](i+1));
-			uint8_t b = LOWERCASE(operator[](i+2));
+			uint8_t a = LOWERCASE(cs[i+1]);
+			uint8_t b = LOWERCASE(cs[i+2]);
 
 			c=0;
 			if (a>='0' && a<='9')
-- 
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