Fix GH-12763: PGSQL pg_untrace(): Argument #1 ($connection) must be of type resource or null, PgSql\Connection given.

Add test bugGH12763.phpt

Author: degtyaryov

ext/pgsql/tests/bugGH12763.phpt

@@ -0,0 +1,18 @@
+--TEST--
+Bug #GH12763 (pg_untrace(): Argument #1 ($connection) must be of type resource or null, PgSql\Connection given)
+--EXTENSIONS--
+pgsql
+--SKIPIF--
+<?php include("skipif.inc"); ?>
+--FILE--
+<?php
+include('config.inc');
+
+$conn = pg_connect($conn_str);
+
+pg_untrace($conn);
+echo "OK";
+
+?>
+--EXPECT--
+OK