[sr-dev] [kamailio/kamailio] dialplan: fix dp_replace() in cmd_export_t struct (#1704)

[micmac1]

In the struct `int param_no` is set to `2`. But `dp_replace()` has actually three
parameters `(dpid, inval, outvar)`, so kamailio's cfg parser fails when
`dp_replace()` is called:

```
yyparse(): cfg. parser: failed to find command dp_replace (params 3)
yyerror_at(): parse error in config file /etc/kamailio/kamailio.cfg, line 366, column 45: unknown command, missing loadmodule?
```

This commit fixes `int param_no` to address this.

Signed-off-by: Sebastian Kemper <sebastian_ml at gmx.net>

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#### Description
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Hi all,

When trying out dp_replace() kamailio (5.1.6) wouldn't start. It was expecting 2 parameters instead of 3. This PR fixes that.

Kind regards,
Seb
You can view, comment on, or merge this pull request online at:

  https://github.com/kamailio/kamailio/pull/1704

-- Commit Summary --

  * dialplan: fix dp_replace() in cmd_export_t struct

-- File Changes --

    M src/modules/dialplan/dialplan.c (2)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/1704.patch
https://github.com/kamailio/kamailio/pull/1704.diff

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