i965/fs: Use is_head_sentinel() instead of ->prev == NULL.
authorMatt Turner <mattst88@gmail.com>
Tue, 24 Jun 2014 19:41:35 +0000 (12:41 -0700)
committerMatt Turner <mattst88@gmail.com>
Tue, 1 Jul 2014 15:55:51 +0000 (08:55 -0700)
commite8e5f0a342505a4d10cbcdee03592c96d286b57c
tree0c8341e8d9b4264d85d3968e5896cc2d6e3e5b16
parentd6bb8bb7ce50dfec83e6be88fc21bb63315d516a
i965/fs: Use is_head_sentinel() instead of ->prev == NULL.

Makes it more clear what we're doing and requires less knowledge of
exec_list.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
src/mesa/drivers/dri/i965/brw_fs.cpp