informix: avoid error when closing RS from destructor

Fixing this is somewhat academic considering that informix driver is no
longer supported since PHP 5.2.1

Fixes #170

1 files changed, 8 insertions, 2 deletions

diff --git a/drivers/adodb-informix72.inc.php b/drivers/adodb-informix72.inc.php
index b57f991a..603b4830 100644
--- a/drivers/adodb-informix72.inc.php
+++ b/drivers/adodb-informix72.inc.php
@@ -378,7 +378,10 @@ class ADODB_informix72 extends ADOConnection {
 	function _close()
 	{
 		$this->lastQuery = false;
-		return ifx_close($this->_connectionID);
+		if($this->_connectionID) {
+			return ifx_close($this->_connectionID);
+		}
+		return true;
 	}
 }
 
@@ -490,7 +493,10 @@ class ADORecordset_informix72 extends ADORecordSet {
 		is running. All associated result memory for the specified result identifier will automatically be freed.	*/
 	function _close()
 	{
-		return ifx_free_result($this->_queryID);
+		if($this->_queryID) {
+			return ifx_free_result($this->_queryID);
+		}
+		return true;
 	}
 
 }