do not encode already encoded characters in msie_refresh
diff --git a/src/core/ngx_string.c b/src/core/ngx_string.c
index 69f032e..2eaffd6 100644
--- a/src/core/ngx_string.c
+++ b/src/core/ngx_string.c
@@ -1147,7 +1147,7 @@
0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
/* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
- 0x000000a5, /* 0000 0000 0000 0000 0000 0000 1010 0101 */
+ 0x00000085, /* 0000 0000 0000 0000 0000 0000 1000 0101 */
/* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
0x00000000, /* 0000 0000 0000 0000 0000 0000 0000 0000 */