Change cookie path from "//" to "/".

Author: kwwall

src/main/java/org/owasp/esapi/reference/DefaultHTTPUtilities.java

@@ -715,7 +715,7 @@ public void killAllCookies(HttpServletRequest request, HttpServletResponse respo
      * @param name
      */
 	public void killCookie(HttpServletRequest request, HttpServletResponse response, String name) {
-		String path = "//";
+		String path = "/";
 		String domain="";
 		Cookie cookie = getFirstCookie(request, name);
 		if ( cookie != null ) {