[libxslt] Fix some case of pattern parsing errors

[Daniel Veillard <veillard src gnome org>]

commit fe5a4fa33eb85bce3253ed3742b1ea6c4b59b41b
Author: Abhishek Arya <inferno chromium org>
Date:   Sun Jan 22 17:47:50 2012 +0800

    Fix some case of pattern parsing errors
    
    We could accidentally hit an off by one string array access
    due to improper loop exit when parsing patterns

 libxslt/pattern.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/libxslt/pattern.c b/libxslt/pattern.c
index 6161376..1155b54 100644
--- a/libxslt/pattern.c
+++ b/libxslt/pattern.c
@@ -1867,6 +1867,8 @@ xsltCompilePatternInternal(const xmlChar *pattern, xmlDocPtr doc,
 		while ((pattern[end] != 0) && (pattern[end] != '"'))
 		    end++;
 	    }
+	    if (pattern[end] == 0)
+	        break;
 	    end++;
 	}
 	if (current == end) {