ALSA: timer: Fix leak in events via snd_timer_user_tinterrupt

The stack object “r1” has a total size of 32 bytes. Its field
“event” and “val” both contain 4 bytes padding. These 8 bytes
padding bytes are sent to user without being initialized.

Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
(cherry picked from commit e4ec8cc8039a7063e24204299b462bd1383184a5)

Issue: KIONE-3528

Change-Id: I87461ee61c53faadffdce885c409efad723ce54d
1 file changed