PMC-1042 Memory Leak using PM Function "executeQuery"

thirdparty/creole/drivers/mysqli/MySQLiResultSet.php

@@ -98,7 +98,7 @@ class MySQLiResultSet extends ResultSetCommon implements ResultSet {
      */
     public function close()
     {
-        if (is_resource($this->result)) {
+        if ($this->result instanceof mysqli_result) {
             @mysqli_free_result($this->result);
         }
         $this->fields = array();

workflow/engine/classes/class.pmFunctions.php

@@ -308,6 +308,7 @@ function executeQuery ($SqlStatement, $DBConnectionUID = 'workflow', $aParameter
                     while ($rs->next()) {
                         $result[$i ++] = $rs->getRow();
                     }
+                    $rs->close();
                     $con->commit();
                     break;
                 case preg_match( "/^INSERT\s/i", $statement ):