log.c: fix a typo in a comment

This is just s/and/end/ to slightly improve readability.
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

log.c

@@ -27,8 +27,8 @@ static char buf_off = 0;
 
 static struct timeval start;
 /*
- * Manual buf len as sprintf will _always_ put '\0' at the
- * and, but we want a "constant" pid to be there on restore
+ * Manual buf len as sprintf will _always_ put '\0' at the end,
+ * but we want a "constant" pid to be there on restore
  */
 #define TS_BUF_OFF	12