HID: wacom: Delete unnecessary checks before the function call "input_free_device"
HID: wacom: Delete unnecessary checks before the function call "input_free_device"

The input_free_device() function tests whether its argument is NULL and
then returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <da4b4ed1d87736710c484a0ca84b2abc9f4ef095@users.sourceforge.net>
Signed-off-by: Jiri Kosina <ed58f755cc8caaf10c3e8c731a8b86fb8f13d6cb@suse.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs