seq: Fix wrong seq version update at snd_seq_hw_get_client_info()

seq: Fix wrong seq version update at snd_seq_hw_get_client_info()

snd_seq_hw_get_client_info() calls mistakenly update_midi_version()
that leads to the update of seq->version from another client info.
It may lead to the inconsistent packet size calculation and the
unaligned read, eventually a program may hit segfault.

Drop the incorrect call of update_midi_version() for fixing it.

Fixes: 2aefb5c41cc0 ("seq: Add UMP support")
Closes: https://github.com/alsa-project/alsa-utils/issues/232
Signed-off-by: Takashi Iwai <tiwai@suse.de>