Those will fail with MySQL 5.5. Running them because they have unveiled a crash, which has been fixed already. Setting to XFAIL, need to be decide if and/or how the functionality shall be supported.

ext/mysqli/tests/mysqli_stmt_execute_stored_proc_next_result.phpt

@@ -123,6 +123,8 @@ if (!$link = my_mysqli_connect($host, $user, $passwd, $db, $port, $socket))
 
 mysqli_close($link);
 ?>
+--XFAIL--
+Unsupported and undefined, under development
 --EXPECTF--
 [010] More results: yes
 [011] Next result: yes

ext/mysqli/tests/mysqli_stmt_execute_stored_proc_out.phpt

@@ -73,6 +73,8 @@ if (!$link = my_mysqli_connect($host, $user, $passwd, $db, $port, $socket))
 
 mysqli_close($link);
 ?>
+--XFAIL--
+Unsupported and undefined, under development
 --EXPECTF--
 [008] More results: %s
 [009] Next results: %s