Description:
------------
After calling a mysql stored procedure with mysqli_query I get the error "Commands out of sync; you can't run this command now" with the following mysqli_query execution.

That is independent from mysqli_query resultmode parameter or a postquery $result->close();

In my case the mysql procedure returns a resultset - didnt test for the case of no resultset

Reproduce code:
---------------
$mysqli = new mysqli($host, $user, $password, $database);
$result = $mysqli->query('CALL mysql_stored_procedure(abc)');
if( $mysqli->errno ) die( $mysqli->error );
while( $data = $result->fetch_object() ):
	print_r( $data );
endwhile;
$result->close();

$result = $mysqli->query('SELECT column1, column2 FROM table WHERE id = 1');
if( $mysqli->errno ) die( $mysqli->error );
while( $data = $result->fetch_object() ):
	print_r( $data );
endwhile;
$result->close();
$mysqli->close();

Expected result:
----------------
mysqli_result (
  resultset for the first query
)

mysqli_result (
 resultset for the second query
)

Actual result:
--------------
mysqli_result (
  resultset for the first query
)

Commands out of sync; you can't run this command now