Bug in ei_encode_string_len

[Alexey Shchepin]

Hi!

It seems ei_encode_string_len incorrectly encode string with length
greater than 0xffff.  It not append ERL_NIL_EXT in the end of list.
This results in badarg error when this binary processed with
binary_to_term.  Below is a patch that should fix this (not tested).

--- encode_string.c.orig        Mon Oct 20 13:20:45 2003
+++ encode_string.c     Mon Oct 20 13:23:52 2003
@@ -42,7 +42,7 @@
        s += len;
     }
     else {
-       if (!buf) s += 5 + (2*len);
+       if (!buf) s += 6 + (2*len);
        else {
            /* strings longer than 65535 are encoded as lists */
            put8(s,ERL_LIST_EXT);
@@ -52,6 +52,8 @@
                put8(s,ERL_SMALL_INTEGER_EXT);
                put8(s,p[i]);
            }
+
+           put8(s,ERL_NIL_EXT);
        }
     }