File libyaml-CVE-2013-6393-string-overflow.patch of Package libyaml

# HG changeset patch
# User Florian Weimer <fweimer@redhat.com>
# Date 1389273500 -3600
#      Thu Jan 09 14:18:20 2014 +0100
# Node ID a54d7af707f25dc298a7be60fd152001d2b3035b
# Parent  3e6507fa0c26d20c09f8f468f2bd04aa2fd1b5b5
yaml_parser_scan_tag_uri: fix int overflow leading to buffer overflow

diff --git a/src/scanner.c b/src/scanner.c
--- a/src/scanner.c
+++ b/src/scanner.c
@@ -2574,7 +2574,7 @@
 
     /* Resize the string to include the head. */
 
-    while (string.end - string.start <= (int)length) {
+    while ((size_t)(string.end - string.start) <= length) {
         if (!yaml_string_extend(&string.start, &string.pointer, &string.end)) {
             parser->error = YAML_MEMORY_ERROR;
             goto error;