Dylan Baker authored Nov 01, 2022 and Eric Engestrom committed Nov 17, 2022

The variable is called `extra`, but what's written is `extra - flags`,
and `flags` is undefined, so if the variable was ever passed there would
be an uncaught exception.

fixes: 9786d9ef



Reviewed-by: Luis Felipe Strano Moraes <luis.strano@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19449>
(cherry picked from commit 4ffa8a9a)