Description:
------------
Wrong variable name descrpid instead of i_descrpid on line #926 in ifx.ec

Reproduce code:
---------------
# diff ifx.ec ifx.ec.orig
926c926
<                                               EXEC SQL SET DESCRIPTOR :i_descrpid VALUE :i
---
>                                               EXEC SQL SET DESCRIPTOR :descrpid VALUE :i


Actual result:
--------------
When I try to execute SQL update statement with char parameters, the
following error occured:


Informix Error -469
This descriptor does not exist. 

PHP Code:

$QUERY = "INSERT INTO tab (col1, col2) VALUES ( ?, ? )";
$blobidarray[] = ifx_create_char($username);
$blobidarray[] = ifx_create_char($password);
$res_id = ifx_query($QUERY, $conn_id, $blobidarray);