fix binding LOB values in mysqli driver prepared statement

lib/Doctrine/DBAL/Driver/Mysqli/MysqliStatement.php

@@ -166,6 +166,11 @@ class MysqliStatement implements \IteratorAggregate, Statement
             throw new MysqliException($this->_stmt->error, $this->_stmt->errno);
         }
 
+        // We have a result.
+        if (false !== $this->_columnNames) {
+            $this->_stmt->store_result();
+        }
+
         if (null === $this->_columnNames) {
             $meta = $this->_stmt->result_metadata();
             if (false !== $meta) {
@@ -191,11 +196,6 @@ class MysqliStatement implements \IteratorAggregate, Statement
             }
         }
 
-        // We have a result.
-        if (false !== $this->_columnNames) {
-            $this->_stmt->store_result();
-        }
-
         return true;
     }