staging: speakup: (coding style) Simplify comparisons to NULL

Fix checkpatch check notices by simplifying comparisons to NULL.

Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Olav Haugan 2017-02-16 21:08:31 -08:00 • committed by Greg Kroah-Hartman
commit 2ffb795f4c